diff --git a/basis/compiler/codegen/codegen.factor b/basis/compiler/codegen/codegen.factor
index 7dca752cf7..0d36a88b45 100644
--- a/basis/compiler/codegen/codegen.factor
+++ b/basis/compiler/codegen/codegen.factor
@@ -152,7 +152,7 @@ M: ##not     generate-insn dst/src       %not     ;
     [ dst/src ] [ temp>> register ] bi ; inline
 
 M: ##integer>bignum generate-insn dst/src/temp %integer>bignum ;
-M: ##bignum>integer generate-insn dst/src %bignum>integer ;
+M: ##bignum>integer generate-insn dst/src/temp %bignum>integer ;
 
 M: ##add-float generate-insn dst/src1/src2 %add-float ;
 M: ##sub-float generate-insn dst/src1/src2 %sub-float ;
diff --git a/basis/cpu/architecture/architecture.factor b/basis/cpu/architecture/architecture.factor
index 618be9a11f..c86f236976 100644
--- a/basis/cpu/architecture/architecture.factor
+++ b/basis/cpu/architecture/architecture.factor
@@ -76,7 +76,7 @@ HOOK: %sar-imm cpu ( dst src1 src2 -- )
 HOOK: %not     cpu ( dst src -- )
 
 HOOK: %integer>bignum cpu ( dst src temp -- )
-HOOK: %bignum>integer cpu ( dst src -- )
+HOOK: %bignum>integer cpu ( dst src temp -- )
 
 HOOK: %add-float cpu ( dst src1 src2 -- )
 HOOK: %sub-float cpu ( dst src1 src2 -- )