diff --git a/tools/clean_headers.sh b/tools/clean_headers.sh
index 627f6466..44053a31 100755
--- a/tools/clean_headers.sh
+++ b/tools/clean_headers.sh
@@ -4,4 +4,5 @@ set -eu
 export ANDROID_BUILD_TOP="$PWD"
 
 ./bionic/libc/kernel/tools/clean_header.py -u \
+    "$1/usr/include/asm/signal.h" \
     "$1/usr/include/asm-generic/signal.h"