diff --git a/gtsam/CMakeLists.txt b/gtsam/CMakeLists.txt
index 5ab49b632..eaf00d8d2 100644
--- a/gtsam/CMakeLists.txt
+++ b/gtsam/CMakeLists.txt
@@ -91,10 +91,6 @@ if (GTSAM_BUILD_STATIC_LIBRARY)
         CLEAN_DIRECT_OUTPUT 1
     	VERSION             ${gtsam_version}
      	SOVERSION           ${gtsam_soversion})
-	if(MSVC)
-	  set_target_properties(gtsam-static PROPERTIES
-	      COMPILE_FLAGS "/MP")
-    endif()
     install(TARGETS gtsam-static ARCHIVE DESTINATION lib)
 endif (GTSAM_BUILD_STATIC_LIBRARY)
 
@@ -107,10 +103,6 @@ if (GTSAM_BUILD_SHARED_LIBRARY)
         CLEAN_DIRECT_OUTPUT 1
     	VERSION             ${gtsam_version}
      	SOVERSION           ${gtsam_soversion})
-	if(MSVC)
-	  set_target_properties(gtsam-shared PROPERTIES
-	      COMPILE_FLAGS "/MP")
-    endif()
     install(TARGETS gtsam-shared LIBRARY DESTINATION lib ARCHIVE DESTINATION lib RUNTIME DESTINATION bin)
 endif(GTSAM_BUILD_SHARED_LIBRARY)