diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7a2b82559..72e308dba 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -203,7 +203,7 @@ if(USE_PROJ)
     #https://proj.org/development/cmake.html
     message(STATUS "Using PROJ")
     mapnik_find_package(PROJ4 REQUIRED)
-    list(APPEND MAPNIK_COMPILE_DEFS MAPNIK_USE_PROJ4 ACCEPT_USE_OF_DEPRECATED_PROJ_API_H=1)
+    list(APPEND MAPNIK_COMPILE_DEFS MAPNIK_USE_PROJ)
     list(APPEND MAPNIK_OPTIONAL_LIBS ${PROJ4_LIBRARIES})
     list(APPEND MAPNIK_OPTIONAL_LIBS_INCLUDE ${PROJ4_INCLUDE_DIRS})
 endif()