diff --git a/O2EM.xcodeproj/project.pbxproj b/O2EM.xcodeproj/project.pbxproj
index f9ff6bd..182939e 100644
--- a/O2EM.xcodeproj/project.pbxproj
+++ b/O2EM.xcodeproj/project.pbxproj
@@ -468,7 +468,6 @@
 				GCC_C_LANGUAGE_STANDARD = gnu99;
 				GCC_GENERATE_DEBUGGING_SYMBOLS = YES;
 				GCC_INCREASE_PRECOMPILED_HEADER_SHARING = NO;
-				GCC_NO_COMMON_BLOCKS = YES;
 				GCC_OPTIMIZATION_LEVEL = 0;
 				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
@@ -502,7 +501,6 @@
 				GCC_C_LANGUAGE_STANDARD = gnu99;
 				GCC_GENERATE_DEBUGGING_SYMBOLS = YES;
 				GCC_INCREASE_PRECOMPILED_HEADER_SHARING = NO;
-				GCC_NO_COMMON_BLOCKS = YES;
 				GCC_OPTIMIZATION_LEVEL = 3;
 				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;