diff --git a/configure.ac b/configure.ac
index 0a289f6d..975a22a5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -89,6 +89,7 @@ AX_CHECK_COMPILE_FLAG([-Wbounded], [CFLAGS="$CFLAGS -Wbounded"])
 AX_CHECK_COMPILE_FLAG([-Winit-self], [CFLAGS="$CFLAGS -Winit-self"])
 AX_CHECK_COMPILE_FLAG([-Wwrite-strings], [CFLAGS="$CFLAGS -Wwrite-strings"])
 AX_CHECK_COMPILE_FLAG([-Wdiv-by-zero], [CFLAGS="$CFLAGS -Wdiv-by-zero"])
+AX_CHECK_COMPILE_FLAG([-Wsometimes-uninitialized], [CFLAGS="$CFLAGS -Wsometimes-uninitialized"])
 
 AC_ARG_VAR([CWFLAGS], [define to compilation flags for generating extra warnings])