diff --git a/CMakeLists.txt b/CMakeLists.txt
index 165c546..dac811a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -70,7 +70,10 @@ add_definitions(-DHAVE_CONFIG_H)
 if(MSVC)
 	add_definitions("/W3")
 else()
-	add_definitions("-Wall" "-Werror")
+	add_definitions("-Wall")
+	if (NOT IOS)
+		add_definitions("-Werror")
+	endif()
 endif()
 
 add_subdirectory(src)