diff --git a/qtcreator-debug.sh b/qtcreator-debug.sh
index 84f1747..4bb2cfb 100755
--- a/qtcreator-debug.sh
+++ b/qtcreator-debug.sh
@@ -1,7 +1,11 @@
 #!/bin/bash
 
-GENERATOR=make
+[ -x "$(command -v make)" ] && GENERATOR="Unix Makefiles"
 [ -x "$(command -v ninja)" ] && GENERATOR=Ninja
+if [ "x${GENERATOR}" = "x" ]; then
+	echo "Build command is not found"
+	exit 1
+fi
 PROJECT=$(grep -i "^Project" "$(dirname -- "$(dirname -- "$(pwd)")")/CMakeLists.txt" | awk -F'[()]' '{print $2}')
 
 "$(dirname $0)/cmake.sh" -g "${GENERATOR}" -f -t Debug