diff --git a/packaging/3rdParty-devel/CMakeLists.txt b/packaging/3rdParty-devel/CMakeLists.txt
index 2986c27a2..73856b5bb 100644
--- a/packaging/3rdParty-devel/CMakeLists.txt
+++ b/packaging/3rdParty-devel/CMakeLists.txt
@@ -323,7 +323,7 @@ else()
 endif()
 
 if(OPTION_FREESOLID)
-   set(FreeSOLID_ARGS ${EXTERNALS_CMAKE_ARGS} -D'CMAKE_DEBUG_POSTFIX=""')
+   set(FreeSOLID_ARGS ${EXTERNALS_CMAKE_ARGS} -DCMAKE_DEBUG_POSTFIX="")
    ExternalProject_Add(${FREESOLID_PROJECT}
       DOWNLOAD_NAME ${FREESOLID_FILE}
       URL ${FREESOLID_URL}
diff --git a/packaging/3rdParty-devel/patches/FreeSOLID-2.1.2.CMakeLists.txt b/packaging/3rdParty-devel/patches/FreeSOLID-2.1.2.CMakeLists.txt
index 38dcb0132..b612757c7 100644
--- a/packaging/3rdParty-devel/patches/FreeSOLID-2.1.2.CMakeLists.txt
+++ b/packaging/3rdParty-devel/patches/FreeSOLID-2.1.2.CMakeLists.txt
@@ -1,12 +1,10 @@
-# modified to remove the CMAKE_DEBUG_POSTFIX
-
 cmake_minimum_required(VERSION 2.8.8)
 
 project(FreeSOLID)
 
 set(CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/CMakeModules;${CMAKE_MODULE_PATH}")
 
-#set(CMAKE_DEBUG_POSTFIX  "_d")
+set(CMAKE_DEBUG_POSTFIX  "_d")
 
 set(OUTPUT_BINDIR ${PROJECT_BINARY_DIR}/bin)
 make_directory(${OUTPUT_BINDIR})