diff --git a/examples/C/hdf5plugins/H5Zmisc.c b/examples/C/hdf5plugins/H5Zmisc.c
index c076780a5..08ed041c8 100644
--- a/examples/C/hdf5plugins/H5Zmisc.c
+++ b/examples/C/hdf5plugins/H5Zmisc.c
@@ -13,7 +13,7 @@
 
 #include "h5misc.h"
 
-#undef DEBUG 
+#undef DEBUG
 
 static int paramcheck(size_t nparams, const unsigned int* params);
 static void byteswap8(unsigned char* mem);
@@ -109,7 +109,7 @@ paramcheck(size_t nparams, const unsigned int* params)
     if(nparams != 14) {
 	fprintf(stderr,"Too few parameters: need=16 sent=%ld\n",(unsigned long)nparams);
 	return 0;
-    }       
+    }
 
     for(i=0;i<nparams;i++) {
         switch (i) {
@@ -140,7 +140,7 @@ paramcheck(size_t nparams, const unsigned int* params)
             i++; /* takes two parameters */
             if(bigendian)
 		byteswap8((unsigned char*)&x);
-#ifdef _MSC_VER
+#if defined  _MSC_VER || defined __APPLE__
 #define DBLVAL 12345678.12345678
 #else
 #define DBLVAL 12345678.12345678d
diff --git a/nc_test4/Makefile.am b/nc_test4/Makefile.am
index 8211b6c38..3f40f4824 100644
--- a/nc_test4/Makefile.am
+++ b/nc_test4/Makefile.am
@@ -14,7 +14,7 @@ include $(top_srcdir)/lib_flags.am
 
 # Note which tests depend on other tests. necessary for make -j check
 TEST_EXTENSIONS = .sh
-
+extradir=
 # Link to our assembled library.
 AM_LDFLAGS += ${top_builddir}/liblib/libnetcdf.la
 
@@ -124,7 +124,7 @@ endif
 # Filter Tests (requires ncdump and ncgen)
 if ENABLE_FILTER_TESTING
 if BUILD_UTILITIES
-check_PROGRAMS += test_filter test_filter_misc
+extra_PROGRAMS = test_filter test_filter_misc
 TESTS += tst_filter.sh
 endif
 endif