diff --git a/CMakeLists.txt b/CMakeLists.txt
index ce97fc689..29b31f979 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -84,6 +84,12 @@ set(GTSAM_PYTHON_VERSION "Default" CACHE STRING "The version of python to build
 if((GTSAM_INSTALL_MATLAB_TOOLBOX OR GTSAM_INSTALL_CYTHON_TOOLBOX) AND NOT GTSAM_BUILD_WRAP)
 	message(FATAL_ERROR "GTSAM_INSTALL_MATLAB_TOOLBOX or GTSAM_INSTALL_CYTHON_TOOLBOX is enabled, please also enable GTSAM_BUILD_WRAP")
 endif()
+if((GTSAM_INSTALL_MATLAB_TOOLBOX OR GTSAM_INSTALL_CYTHON_TOOLBOX) AND GTSAM_BUILD_TYPE_POSTFIXES)
+    set(CURRENT_POSTFIX ${CMAKE_${CMAKE_BUILD_TYPE}_POSTFIX})
+    if(NOT "${CURRENT_POSTFIX}" STREQUAL "")
+        message(FATAL_ERROR "Cannot use executable postfixes with the matlab or cython wrappers. Please disable GTSAM_BUILD_TYPE_POSTFIXES")
+    endif()
+endif()
 if(GTSAM_INSTALL_WRAP AND NOT GTSAM_BUILD_WRAP)
 	message(FATAL_ERROR "GTSAM_INSTALL_WRAP is enabled, please also enable GTSAM_BUILD_WRAP")
 endif()