diff --git a/test/makefile b/test/makefile
index 5ea8715..8b41f6d 100644
--- a/test/makefile
+++ b/test/makefile
@@ -16,29 +16,29 @@ test_001: $(FLAWFINDER) test.c test2.c
 	@echo "Testing for no ending newline:" >> test-results.txt
 	@$(PYTHON) $(FLAWFINDER) --omittime no-ending-newline.c | \
 	  grep 'Lines analyzed' >> test-results.txt
-	@diff -u correct-results.txt test-results.txt
+	@diff -u --ignore-all-space correct-results.txt test-results.txt
 
 test_002: $(FLAWFINDER) test.c test2.c
 	@echo 'test_002 (HTML output)'
 	@$(PYTHON) $(FLAWFINDER) --omittime --html --context test.c test2.c > test-results.html
-	@diff -u correct-results.html test-results.html
+	@diff -u --ignore-all-space correct-results.html test-results.html
 
 test_003: $(FLAWFINDER) test.c test2.c
 	@echo 'test_003 (CSV output)'
 	@$(PYTHON) $(FLAWFINDER) --csv test.c test2.c > test-results.csv
-	@diff -u correct-results.csv test-results.csv
+	@diff -u --ignore-all-space correct-results.csv test-results.csv
 
 test_004: $(FLAWFINDER) test.c
 	@echo 'test_004 (single-line)'
 	@$(PYTHON) $(FLAWFINDER) -m 5 -S -DC --quiet test.c > \
 	  test-results-004.txt
-	@diff -u correct-results-004.txt test-results-004.txt
+	@diff -u --ignore-all-space correct-results-004.txt test-results-004.txt
 
 test_005: $(FLAWFINDER) test-diff-005.patch test-patched.c
 	@echo 'test_005 (diff)'
 	@$(PYTHON) $(FLAWFINDER) -SQDC -P test-diff-005.patch \
 	  test-patched.c > test-results-005.txt
-	@diff -u correct-results-005.txt test-results-005.txt
+	@diff -u --ignore-all-space correct-results-005.txt test-results-005.txt
 
 test_006: $(FLAWFINDER) test.c
 	@echo 'test_006 (save/load hitlist)'
@@ -48,7 +48,7 @@ test_006: $(FLAWFINDER) test.c
 	@$(PYTHON) $(FLAWFINDER) -SQDC -m 5 \
 	  --loadhitlist test-saved-hitlist-006.txt > \
 	  test-results-006.txt
-	@diff -u correct-results-006.txt test-results-006.txt
+	@diff -u --ignore-all-space correct-results-006.txt test-results-006.txt
 
 test_007: $(SETUPPY)
 	@echo 'test_007 (setup.py sane)'
@@ -64,7 +64,7 @@ test_008: $(FLAWFINDER) test.c
 	@$(PYTHON) $(FLAWFINDER) -S -C --quiet --omittime \
 	  --diffhitlist  test-saved-hitlist-008.txt test.c > \
 	  test-results-008.txt
-	@diff -u correct-results-008.txt test-results-008.txt
+	@diff -u --ignore-all-space correct-results-008.txt test-results-008.txt
 
 test_009: $(FLAWFINDER) test-cpp-digit-separator.cpp
 	@echo 'test_009 (C++ digit separator)'
@@ -107,3 +107,4 @@ test-is-correct: test-results.txt
 	cp -p test-results-008.txt correct-results-008.txt
 
 .PHONY: test check test-is-correct
+