diff --git a/cmake/modules/CompileWarnings.cmake b/cmake/modules/CompileWarnings.cmake
index 54c7fce9f8..2d49ba9852 100644
--- a/cmake/modules/CompileWarnings.cmake
+++ b/cmake/modules/CompileWarnings.cmake
@@ -14,7 +14,9 @@ macro(wpilib_target_warnings target)
     endif()
 
     # Compress debug info with GCC
-    if (${CMAKE_BUILD_TYPE} STREQUAL "Debug" AND ${CMAKE_CXX_COMPILER_ID} STREQUAL "GNU")
+    if ((${CMAKE_BUILD_TYPE} STREQUAL "Debug" OR
+         ${CMAKE_BUILD_TYPE} STREQUAL "RelWithDebInfo") AND
+        ${CMAKE_CXX_COMPILER_ID} STREQUAL "GNU")
       target_compile_options(${target} PRIVATE -gz=zlib)
     endif()
 endmacro()