diff --git a/src/vim9cmds.c b/src/vim9cmds.c
index b9a0293..c49a482 100644
--- a/src/vim9cmds.c
+++ b/src/vim9cmds.c
@@ -1862,7 +1862,7 @@
 	    if (*p == '{')
 	    {
 		exarg_T ea;
-		int	flags;  // unused
+		int	flags = 0;  // unused
 		int	start_lnum = SOURCING_LNUM;
 
 		CLEAR_FIELD(ea);