diff --git a/makefile/app.mk b/makefile/app.mk
index 8b792e7..f6f5404 100644
--- a/makefile/app.mk
+++ b/makefile/app.mk
@@ -134,6 +134,8 @@ endif
 ifeq ($(HOST_OS),cygwin)
 	# This assumes that the Windows ping command is used, not cygwin's.
 	QUICK_PING_ARGS = -n 1 -w 1000
+else ifeq ($(HOST_OS),macos) # Mac
+	QUICK_PING_ARGS = -c 1 -W 1
 else # Linux
 	QUICK_PING_ARGS = -c 1 -w 1
 endif
@@ -672,4 +674,4 @@ tr:
 	p4 revert -a locale/.../translations.xml
 	p4 opened -c default
 
-##########################################################################
\ No newline at end of file
+##########################################################################