James William Dowdell pleaded guilty to a robbery which occurred May 22, 1969. On August 21, 1969, Dowdell was sentenced to the Indiana State Reformatory for and indeterminate term of not less than ten (10) years nor more than twenty-five (25) years. Later on March 2, 1973, Dowdell filed a petition for post-conviction relief, asserting that his sentence was incorrect. The trial court corrected Dowdell’s sentence to a term of not less than ten (10) years nor more than twenty (20) years and denied the remainder of the petition. Dowdell’s motion to correct errors presents this sole issue: whether the trial court should have reduced his minimum sentence to five years as provided by a statute which became effective three days before his sentencing. We conclude that the trial court’s sentence was correct, and we affirm.
On May 22, 1969, the date of the crime, the following statutes were in effect:
Robbery: “Whoever takes from the person of another any article of value by violence or by putting in fear, is guilty of robbery, and on conviction shall be imprisoned not less than ten [10] years nor more than twenty-five [25] years. . . .’’ IC 1971, 35-13-4-6, Ind. Ann. Stat. §10-4101 (Burns 1956).
Commission of or attempt to commit crime while armed with a deadly weapon: “Any person who being over sixteen [16] years of age, commits or attempts to commit either the crime of rape, robbery, bank robbery, or theft while armed with . . . any dangerous or deadly weapon . . . shall be guilty of a separate felony in addition to the crimes above named and upon conviction shall be imprisoned for a determinate period of not less than ten [10] years nor more than twenty [20] years. . . .” Ch. 55, § 1, [1929] Ind. Acts 139, as amended by ch: 298, § 1, [1965] Ind. Acts 819 (now codified at IC'. 1971, 35-12-1-1, Ind. Ann. Stat. § 10-4709 (Burns Supp. 1974)).
*398 Effective August 19, 1969, three days prior to Dowdell’s sentencing, the sentencing provision of the Armed Felony statute was amended. The pertinent part of the amended statute provided that a person who commits any felony while armed “shall be imprisoned for a determinate period of not less than five [5] years nor more than thirty [30] years, if the penalty imposed upon the said felony is more than ten [10] years. . . .” Ch. 206, § 1 [1969], Ind. Acts 771 1 (now codified at IC 1971, 35-12-1-1, Ind. Ann. Stat. § 10-4709 (Burns Supp. 1974)).
Robbery is a lesser included offense of the commission of a felony while armed.
Taylor
v.
State
(1968),
On August 18, 1969, the penalty for the greater offense of armed robbery was amended to a determinate term of not less than five (5) years nor more than thirty (30) years. The proper sentence for the crime of robbery then became an indeterminate term of not less than
*399
five (5) years nor more than twenty-five (25) years.
3
DeWeese
v.
State
(1972),
The general rule is that the law in effect at the time the crime was committed is controlling.
Jackson
v.
State
(1971),
If a statutory amendment mitigates the punishment, there is no constitutional obstacle in the way of applying an amendment effective after the commission of the crime. However, it is a legislative function and not a judicial function to set the amount of the punishment *400 for a crime, within the constitutional limitations. Dembowski, supra. While the penalty must not be excessive and must be proportioned to the nature of the offense, this does not mean that this Court can alter a penalty merely because it seems harsh or merely because we feel a different penalty would be more appropriate. We are bound by the legislature’s determination of the appropriate penalty, so long as that penalty is constitutional.
We must determine whether the legislature intended that the statute as amended in 1969 should be applied to an offense committed before its enactment. The legislature failed to specify in the 1969 amendment when the punishment imposed should be applied. Legislative intent must therefore be discovered from sources other than the express language of the amended statute.
One source of legislative intent is the general savings statute,
7
which by law is imported into all subsequent repealing or amending acts and obviates the necessity for individual savings clauses.
State
v.
Hardman
(1896),
*401
We find a clear statement of the legislature’s intent in the provisions of the amending statute. The 1969 amendment increased the maximum penalty for the crime of armed felony at the same time it decreased the minimum time. The 1969 amendment was not an ameliorative amendment.
See Holguin
v.
State
(1971),
Since the 1969 amendment was not an ameliorative amendment, but in fact imposed a more severe penalty than was previously imposed for the crime of armed felony, we find expressed in it the intent of the legislature that the amendment not be applied to crimes committed prior to its effective date. 8 We must presume that the *402 legislature intends to follow the Constitution. To apply the increased penalty under the 1969 amendment to one who committed the crime prior to the effective date of the 1969 amendment would be an unconstitutional imposition of an ex post facto penalty. Thus, the legislature must have intended that the amended penalty not be applicable to crimes committed prior to its enactment.
This intent is supported by the provisions of the general savings statute and, further, by the rule of statutory construction that, when there is nothing to indicate a contrary intent in a statute, it will be presumed that the legislature intended the statute to operate prospectively and not retroactively.
See Malone
v.
Conner
(1963),
We conclude that the modification of Dowdell’s sentence to an indeterminate term of not less than ten (10) years nor more than twenty (20) years is proper. 9 This was the punishment which was proper at the time the crime was committed. This is the punishment which the legislature must have intended be applied until such time as the amended sentence could constitutionally be imposed.
Affirmed.
Hoffman, J., and Garrard, J., concur.
Note. — Reported at
Notes
. In
Boyd
v.
State
(1971),
. It should be noted that, effective September, 1971, the legislature remedied the unconstitutional penalty for robbery by amending the armed felony _ statute to provide a penalty of imprisonment for a determinate period of not less than ten (10) years nor more than thirty (30) years in all cases. IC 1971, 35-12-1-1, Ind. Ann. Stat. § 10-4709 (Burns Supp. 1974).
. In
DeWeese
v.
State
(1972),
. Final judgment is entered at the time of sentencing.
McMinoway
v.
State
(1973),
.
See, e.g., In re Estrada
(1965),
.
See, e.g., Hicks
v.
State
(1898),
. IC 1971, 1-1-5-1, (Burns Code Ed.) provides:
“And the repeal of any statute shall not have the effect to release or extinguish any penalty, forfeiture or liability incurred under such statute, unless the repealing act shall so expressly provide, and such statute shall be treated as still remaining in force for the purposes of sustaining any proper action or prosecution for the enforcement of such penalty, forfeiture or liability.”
As appellant points out, most of the cases that have dealt with the savings statute have been concerned with the preservation of the State’s right to prosecute under the repealed or amended act, not with the precise question of the preservation of the penalty imposed under the repealed or amended act.
See, e.g., State
v.
Hardman
(1896),
. If the legislature had enacted an ameliorative amendment, the application of which would be constitutionally permissible to persons who had committed the crime prior to its effective date, we would be willing to find a statement of legislative intent to apply the sentencing provisions of that ameliorative statute to all persons to whom such application would be possible and constitutional. Article I, section 18, of the Indiana Constitution provides: “The penal code shall be founded on the principles of reformation, and not of vindictive justice.” If *402 there is an express statement by the legislature that its former penalty was too severe and that a lighter punishment is proper as punishment for the commission of the proscribed act, then to hold that the more severe penalty should apply would serve no purpose other than to satisfy a constitutionally impermissible desire for vindictive justice. We could not ascribe to the legislature an intent to punish for vindictive purposes.
. This decision is consistent with the decision of the Indiana Supreme Court in
Jackson
v.
State
(1971),
