diff --git a/mac/Audacity.xcodeproj/project.pbxproj b/mac/Audacity.xcodeproj/project.pbxproj
index eec3f448c..5b6cfa1c0 100644
--- a/mac/Audacity.xcodeproj/project.pbxproj
+++ b/mac/Audacity.xcodeproj/project.pbxproj
@@ -8593,6 +8593,7 @@
 				FFMPEG_CXXFLAGS = "$(FFMPEG_CFLAGS)";
 				FFMPEG_PREFIX = /usr/local;
 				GCC_OPTIMIZATION_LEVEL = 0;
+				GCC_WARN_ABOUT_DEPRECATED_FUNCTIONS = NO;
 				INFOPLIST_OTHER_PREPROCESSOR_FLAGS = "-traditional";
 				INFOPLIST_PREFIX_HEADER = build/Info.plist.h;
 				INFOPLIST_PREPROCESS = YES;
@@ -8918,6 +8919,7 @@
 				FFMPEG_CXXFLAGS = "$(FFMPEG_CFLAGS)";
 				FFMPEG_PREFIX = /usr/local;
 				GCC_OPTIMIZATION_LEVEL = 3;
+				GCC_WARN_ABOUT_DEPRECATED_FUNCTIONS = NO;
 				INFOPLIST_OTHER_PREPROCESSOR_FLAGS = "-traditional";
 				INFOPLIST_PREFIX_HEADER = build/Info.plist.h;
 				INFOPLIST_PREPROCESS = YES;