diff --git a/src/quickfix.c b/src/quickfix.c
index fd6eba6..625d19d 100644
--- a/src/quickfix.c
+++ b/src/quickfix.c
@@ -2295,7 +2295,7 @@
     regmatch.regprog = vim_regcomp(s, RE_MAGIC);
     if (regmatch.regprog == NULL)
 	goto theend;
-    regmatch.rmm_ic = FALSE;
+    regmatch.rmm_ic = p_ic;
 
     p = skipwhite(p);
     if (*p == NUL)