diff --git a/Support/HockeySDK.xcodeproj/project.pbxproj b/Support/HockeySDK.xcodeproj/project.pbxproj
index 10d3567fa9..b3e8f0108f 100644
--- a/Support/HockeySDK.xcodeproj/project.pbxproj
+++ b/Support/HockeySDK.xcodeproj/project.pbxproj
@@ -1019,6 +1019,10 @@
 					"\"$(SRCROOT)/../Vendor\"",
 				);
 				GCC_THUMB_SUPPORT = NO;
+				OTHER_CFLAGS = (
+					"$(inherited)",
+					"-DNS_BLOCK_ASSERTIONS=1",
+				);
 				PRODUCT_NAME = HockeySDK;
 				PUBLIC_HEADERS_FOLDER_PATH = "include/$(PRODUCT_NAME)";
 				SKIP_INSTALL = YES;