diff --git a/arch/x86/kernel/cpu/mkcapflags.sh b/arch/x86/kernel/cpu/mkcapflags.sh
index d0dfb892c72fe7e3648fba753e0d7351d19006f9..aed45b8895d5b5f5c293ae4f6a47499e580f5825 100644
--- a/arch/x86/kernel/cpu/mkcapflags.sh
+++ b/arch/x86/kernel/cpu/mkcapflags.sh
@@ -4,6 +4,8 @@
 # Generate the x86_cap/bug_flags[] arrays from include/asm/cpufeatures.h
 #
 
+set -e
+
 IN=$1
 OUT=$2