diff --git a/src/nvim/regexp.c b/src/nvim/regexp.c
index de9a7e580f..f69c5fac1c 100644
--- a/src/nvim/regexp.c
+++ b/src/nvim/regexp.c
@@ -1727,7 +1727,8 @@ 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;
   }
 }