diff --git a/src/proc.sh b/src/proc.sh
index f0c1c75..93b2907 100644
--- a/src/proc.sh
+++ b/src/proc.sh
@@ -7,7 +7,7 @@ set -Eeuo pipefail
 : "${CPU_FLAGS:=""}"
 : "${CPU_MODEL:="host"}"
 
-[ "$ARCH" != "arm"* ] && KVM="N"
+[[ "$ARCH" != "arm"* ]] && KVM="N"
 
 if [[ "$KVM" != [Nn]* ]]; then