diff --git a/plugins/vst_base/CMakeLists.txt b/plugins/vst_base/CMakeLists.txt
index 5091b7cbf..4db8e0796 100644
--- a/plugins/vst_base/CMakeLists.txt
+++ b/plugins/vst_base/CMakeLists.txt
@@ -21,10 +21,12 @@ SET(EXTERNALPROJECT_ARGS
 )
 
 SET(EXTERNALPROJECT_CMAKE_ARGS
-	-DLMMS_SOURCE_DIR=${CMAKE_SOURCE_DIR}
-	-DLMMS_BINARY_DIR=${CMAKE_BINARY_DIR}
-	-DCMAKE_RUNTIME_OUTPUT_DIRECTORY=${CMAKE_RUNTIME_OUTPUT_DIRECTORY}
-	-DCMAKE_MODULE_PATH=${CMAKE_MODULE_PATH}
+	"-DLMMS_SOURCE_DIR=${CMAKE_SOURCE_DIR}"
+	"-DLMMS_BINARY_DIR=${CMAKE_BINARY_DIR}"
+	"-DCMAKE_RUNTIME_OUTPUT_DIRECTORY=${CMAKE_RUNTIME_OUTPUT_DIRECTORY}"
+	"-DCMAKE_RUNTIME_OUTPUT_DIRECTORY_DEBUG=${CMAKE_RUNTIME_OUTPUT_DIRECTORY}"
+	"-DCMAKE_MODULE_PATH=${CMAKE_MODULE_PATH}"
+	"-DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}"
 )
 
 # build 32 bit version of RemoteVstPlugin
@@ -48,11 +50,11 @@ IF(LMMS_BUILD_WIN64 AND MSVC)
 	ENDIF()
 
 	ExternalProject_Add(RemoteVstPlugin32
-		${EXTERNALPROJECT_ARGS}
+		"${EXTERNALPROJECT_ARGS}"
 		CMAKE_GENERATOR ${GENERATOR}
 		CMAKE_ARGS
-			${EXTERNALPROJECT_CMAKE_ARGS}
-			-DCMAKE_PREFIX_PATH=${QT_32_PREFIX}
+			"${EXTERNALPROJECT_CMAKE_ARGS}"
+			"-DCMAKE_PREFIX_PATH=${QT_32_PREFIX}"
 	)
 ELSEIF(LMMS_BUILD_WIN32)
 	ADD_SUBDIRECTORY(RemoteVstPlugin)
@@ -60,8 +62,8 @@ ELSEIF(LMMS_BUILD_LINUX)
 	ExternalProject_Add(RemoteVstPlugin32
 		"${EXTERNALPROJECT_ARGS}"
 		CMAKE_ARGS
-			${EXTERNALPROJECT_CMAKE_ARGS}
-			-DCMAKE_CXX_COMPILER=${WINEGCC}
+			"${EXTERNALPROJECT_CMAKE_ARGS}"
+			"-DCMAKE_CXX_COMPILER=${WINEGCC}"
 			"-DCMAKE_CXX_FLAGS=-m32 -mwindows"
 	)
 ENDIF()
@@ -73,8 +75,8 @@ ELSEIF(LMMS_BUILD_LINUX)
 	ExternalProject_Add(RemoteVstPlugin64
 		"${EXTERNALPROJECT_ARGS}"
 		CMAKE_ARGS
-			${EXTERNALPROJECT_CMAKE_ARGS}
-			-DCMAKE_CXX_COMPILER=${WINEGCC}
+			"${EXTERNALPROJECT_CMAKE_ARGS}"
+			"-DCMAKE_CXX_COMPILER=${WINEGCC}"
 			"-DCMAKE_CXX_FLAGS=-m64 -mwindows"
 	)
 ENDIF()