diff --git a/buildscripts/cmake/SetupBuildEnvironment.cmake b/buildscripts/cmake/SetupBuildEnvironment.cmake
index d45a7728590..c4c77d48198 100644
--- a/buildscripts/cmake/SetupBuildEnvironment.cmake
+++ b/buildscripts/cmake/SetupBuildEnvironment.cmake
@@ -159,7 +159,13 @@
         endif()
     endif() #MUE_COMPILE_QT5_COMPAT
 
-    set(MACOSX_DEPLOYMENT_TARGET 10.15)
-    set(CMAKE_OSX_DEPLOYMENT_TARGET 10.15)
+    if (NOT CMAKE_OSX_DEPLOYMENT_TARGET)
+        if (NOT "$ENV{MACOSX_DEPLOYMENT_TARGET}" STREQUAL "")
+            set(CMAKE_OSX_DEPLOYMENT_TARGET "$ENV{MACOSX_DEPLOYMENT_TARGET}")
+        else()
+            set(CMAKE_OSX_DEPLOYMENT_TARGET 10.15)
+        endif()
+    endif()
+    set(MACOSX_DEPLOYMENT_TARGET "${CMAKE_OSX_DEPLOYMENT_TARGET}")
 endif(OS_IS_MAC)