diff --git a/src/usercmd.c b/src/usercmd.c
index de985f8..40790a1 100644
--- a/src/usercmd.c
+++ b/src/usercmd.c
@@ -1021,7 +1021,7 @@
 	char_u	    *line = NULL;
 
 	ga_init2(&ga, sizeof(char_u *), 10);
-	if (ga_add_string(&ga, p) == FAIL)
+	if (ga_copy_string(&ga, p) == FAIL)
 	    return retp;
 
 	// If the argument ends in "}" it must have been concatenated already
@@ -1038,7 +1038,7 @@
 		    emsg(_(e_missing_rcurly));
 		    break;
 		}
-		if (ga_add_string(&ga, line) == FAIL)
+		if (ga_copy_string(&ga, line) == FAIL)
 		    break;
 		if (*skipwhite(line) == '}')
 		    break;