diff --git a/src/mzscheme/gc2/Makefile.in b/src/mzscheme/gc2/Makefile.in
index fd78e4e76a..aa28f6ba91 100644
--- a/src/mzscheme/gc2/Makefile.in
+++ b/src/mzscheme/gc2/Makefile.in
@@ -390,6 +390,8 @@ $(MZFWMMM): ../libmzscheme3m.@LIBSFX@
 	cp "PLT_MzScheme.framework/Versions/$(FWVERSION)_3m/PLT_MzScheme" "../PLT_MzScheme.framework/Versions/$(FWVERSION)_3m/PLT_MzScheme"
 	/usr/bin/install_name_tool -change "PLT_MzScheme.framework/Versions/$(FWVERSION)_3m/PLT_MzScheme" "@executable_path/PLT_MzScheme.framework/Versions/$(FWVERSION)_3m/PLT_MzScheme" "../mzscheme@MMM@"
 
+../mzscheme_compact_gc@OSX@:
+	echo "../mzscheme_compact_gc not currently build on OSX"
 
 clean:
 	/bin/rm -f ../mzscheme@MMM@ *.@LTO@ $(XSRCDIR)/*
diff --git a/src/mzscheme/gc2/vm_osx.c b/src/mzscheme/gc2/vm_osx.c
index c19470519a..b182bc8de3 100644
--- a/src/mzscheme/gc2/vm_osx.c
+++ b/src/mzscheme/gc2/vm_osx.c
@@ -107,7 +107,7 @@ static void os_vm_free_pages(void *p, size_t len)
   }
 }
 
-static void protect_pages(void *p, size_t len, int writeable)
+static void vm_protect_pages(void *p, size_t len, int writeable)
 {
   kern_return_t retval;
 
@@ -133,7 +133,7 @@ static unsigned long determine_max_heap_size()
   struct rlimit rlim;
 
   getrlimit(RLIMIT_RSS, &rlim);
-  return (rlim.rlim_cur == RLIM_INFINITY) ? (unsigned long)-1 : retval;
+  return (rlim.rlim_cur == RLIM_INFINITY) ? (unsigned long)-1 : rlim.rlim_cur;
 }
 #endif