diff --git a/target-sparc/op_helper.c b/target-sparc/op_helper.c
index 470c710755f400ec45b585334ee6a83b26a5acad..be3c1e051b5f6f12b82c28ac41b9be2c98741079 100644
--- a/target-sparc/op_helper.c
+++ b/target-sparc/op_helper.c
@@ -3306,7 +3306,7 @@ target_ulong helper_udiv(target_ulong a, target_ulong b)
     uint32_t x1;
 
     x0 = (a & 0xffffffff) | ((int64_t) (env->y) << 32);
-    x1 = b;
+    x1 = (b & 0xffffffff);
 
     if (x1 == 0) {
         raise_exception(TT_DIV_ZERO);
@@ -3328,7 +3328,7 @@ target_ulong helper_sdiv(target_ulong a, target_ulong b)
     int32_t x1;
 
     x0 = (a & 0xffffffff) | ((int64_t) (env->y) << 32);
-    x1 = b;
+    x1 = (b & 0xffffffff);
 
     if (x1 == 0) {
         raise_exception(TT_DIV_ZERO);