diff --git a/tools/build-companion.sh b/tools/build-companion.sh
index 434452510..d01229455 100755
--- a/tools/build-companion.sh
+++ b/tools/build-companion.sh
@@ -25,7 +25,7 @@ if [[ "$CMAKE_GENERATOR" == "Ninja" ]]; then
     QUIET_FLAGS="-- --quiet"
 else
     # Assume Makefile generator for non-Ninja builds
-    COMMON_OPTIONS="-DCMAKE_RULE_MESSAGES=OFF"
+    COMMON_OPTIONS="${COMMON_OPTIONS} -DCMAKE_RULE_MESSAGES=OFF"
 fi
 
 COMMON_OPTIONS="${COMMON_OPTIONS} -DCMAKE_BUILD_TYPE=Release -DCMAKE_MESSAGE_LOG_LEVEL=WARNING -Wno-dev -DGVARS=YES -DHELI=YES -DLUA=YES"