diff --git a/FxA/FxA.xcodeproj/project.pbxproj b/FxA/FxA.xcodeproj/project.pbxproj
index b721b29b6dd5..0acdf7cd87f5 100644
--- a/FxA/FxA.xcodeproj/project.pbxproj
+++ b/FxA/FxA.xcodeproj/project.pbxproj
@@ -799,6 +799,7 @@
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
 				DYLIB_INSTALL_NAME_BASE = "@rpath";
+				GCC_WARN_INHIBIT_ALL_WARNINGS = YES;
 				HEADER_SEARCH_PATHS = (
 					"$(inherited)",
 					/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include,
@@ -825,6 +826,7 @@
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
 				DYLIB_INSTALL_NAME_BASE = "@rpath";
+				GCC_WARN_INHIBIT_ALL_WARNINGS = YES;
 				HEADER_SEARCH_PATHS = (
 					"$(inherited)",
 					/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include,
@@ -934,6 +936,7 @@
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
 				DYLIB_INSTALL_NAME_BASE = "@rpath";
+				GCC_WARN_INHIBIT_ALL_WARNINGS = YES;
 				HEADER_SEARCH_PATHS = (
 					"$(inherited)",
 					/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include,