diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4965a9c..846eb8d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -26,9 +26,15 @@ endif()
 
 string(TOUPPER "x${CMAKE_BUILD_TYPE}" BUILD_TYPE)
 if("${BUILD_TYPE}" STREQUAL "XDEBUG")
-	add_definitions(-DLC_DEBUG)
+  add_definitions(-DLC_DEBUG)
 else()
-	add_definitions(-DNDEBUG)
+  add_definitions(-DNDEBUG)
+
+  # Avoid false "maybe uninitialized" warning generated by old GCC versions
+  # when building with -O2
+  if(CMAKE_C_COMPILER_ID STREQUAL "GNU")
+    add_compile_options(-Wno-maybe-uninitialized)
+  endif()
 endif()
 
 add_definitions(-DHAS_SOCKLEN_T)