diff --git a/cmake.sh b/cmake.sh
index 2d3526f..6145a14 100755
--- a/cmake.sh
+++ b/cmake.sh
@@ -86,6 +86,15 @@ CMAKE_ARGS=""
 
 [ ! -f "${SOURCE_DIR}/CMakeLists.txt" ] && { echo "Source directory does not contain CMakeLists.txt"; exit 4; }
 
+if grep -i ^"project.*fortran" "${SOURCE_DIR}/CMakeLists.txt" >/dev/null 2>&1 ; then
+	if [ -x "$(command -v make)" ]; then
+		GENERATOR="Unix Makefiles"
+	else
+		echo "Projects with Fortran sources need Make to build"
+		exit 5
+	fi
+fi
+
 export GENERATOR
 export SOURCE_DIR
 export BUILD_DIR