diff --git a/src/cmd/gc/align.c b/src/cmd/gc/align.c
index 460358df18..00dd9d88ea 100644
--- a/src/cmd/gc/align.c
+++ b/src/cmd/gc/align.c
@@ -491,7 +491,7 @@ typeinit(void)
 	okfor[OGT] = okforcmp;
 	okfor[OLE] = okforcmp;
 	okfor[OLT] = okforcmp;
-	okfor[OMOD] = okforarith;
+	okfor[OMOD] = okforand;
 	okfor[OMUL] = okforarith;
 	okfor[ONE] = okforeq;
 	okfor[OOR] = okforand;