1 files changed, 1 insertions, 1 deletions

diff --git a/win/tcl.m4 b/win/tcl.m4
index 4824e8e..989ea76 100644
--- a/win/tcl.m4
+++ b/win/tcl.m4
@@ -673,7 +673,7 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 
 	CFLAGS_DEBUG=-g
 	CFLAGS_OPTIMIZE="-O2 -fomit-frame-pointer"
-	CFLAGS_WARNING="-Wall -Wextra -Wwrite-strings -Wpointer-arith"
+	CFLAGS_WARNING="-Wall -Wextra -Wshadow -Wwrite-strings -Wpointer-arith"
 	LDFLAGS_DEBUG=
 	LDFLAGS_OPTIMIZE=