diff --git a/src/nvim/regexp.c b/src/nvim/regexp.c
index 7a8d963dee..c07831f03d 100644
--- a/src/nvim/regexp.c
+++ b/src/nvim/regexp.c
@@ -1729,7 +1729,8 @@ static void mb_decompose(int c, int *c1, int *c2, int *c3)
     *c3 = d.c;
   } else {
     *c1 = c;
-    *c2 = *c3 = 0;
+    *c2 = 0;
+    *c3 = 0;
   }
 }