diff --git a/ApacheConnector/samples/Makefile b/ApacheConnector/samples/Makefile
index 24d7ef95c6..60ffdfa667 100644
--- a/ApacheConnector/samples/Makefile
+++ b/ApacheConnector/samples/Makefile
@@ -5,7 +5,7 @@
 #
 
 .PHONY: projects
-clean all: projects
+clean distclean all: projects
 projects:
 	$(MAKE) -C TimeServer $(MAKECMDGOALS)
 	$(MAKE) -C FormServer $(MAKECMDGOALS)
diff --git a/Crypto/samples/Makefile b/Crypto/samples/Makefile
index 64fd4b6d46..c796e7377d 100644
--- a/Crypto/samples/Makefile
+++ b/Crypto/samples/Makefile
@@ -5,6 +5,6 @@
 #
 
 .PHONY: projects
-clean all: projects
+clean distclean all: projects
 projects:
 	$(MAKE) -C genrsakey $(MAKECMDGOALS)
diff --git a/Data/samples/Makefile b/Data/samples/Makefile
index 5befacc033..da7624067f 100644
--- a/Data/samples/Makefile
+++ b/Data/samples/Makefile
@@ -5,7 +5,7 @@
 #
 
 .PHONY: projects
-clean all: projects
+clean distclean all: projects
 projects:
 	$(MAKE) -C Binding $(MAKECMDGOALS)
 	$(MAKE) -C TypeHandler $(MAKECMDGOALS)
diff --git a/Encodings/samples/Makefile b/Encodings/samples/Makefile
index 3cbcaddb24..84e9510294 100644
--- a/Encodings/samples/Makefile
+++ b/Encodings/samples/Makefile
@@ -5,6 +5,6 @@
 #
 
 .PHONY: projects
-clean all: projects
+clean distclean all: projects
 projects:
 	$(MAKE) -C TextConverter $(MAKECMDGOALS)
diff --git a/Foundation/samples/Makefile b/Foundation/samples/Makefile
index 6307f471b5..af41738fbb 100644
--- a/Foundation/samples/Makefile
+++ b/Foundation/samples/Makefile
@@ -5,7 +5,7 @@
 #
 
 .PHONY: projects
-clean all: projects
+clean distclean all: projects
 projects:
 	$(MAKE) -C ActiveMethod $(MAKECMDGOALS)
 	$(MAKE) -C Activity $(MAKECMDGOALS)
diff --git a/Foundation/testsuite/Makefile b/Foundation/testsuite/Makefile
index 07f928a635..27fbafb803 100644
--- a/Foundation/testsuite/Makefile
+++ b/Foundation/testsuite/Makefile
@@ -5,7 +5,7 @@
 #
 
 .PHONY: projects
-clean all: projects
+clean distclean all: projects
 projects:
 	$(MAKE) -f Makefile-Driver $(MAKECMDGOALS)
 ifneq ($(LINKMODE),STATIC)
diff --git a/JSON/samples/Makefile b/JSON/samples/Makefile
index 068d434308..406e5a9ff8 100644
--- a/JSON/samples/Makefile
+++ b/JSON/samples/Makefile
@@ -5,7 +5,7 @@
 #
 
 .PHONY: projects
-clean all: projects
+clean distclean all: projects
 projects:
 	$(MAKE) -C Benchmark $(MAKECMDGOALS)
 
diff --git a/MongoDB/samples/Makefile b/MongoDB/samples/Makefile
index c2cd8ec8ee..ae7f51e46c 100644
--- a/MongoDB/samples/Makefile
+++ b/MongoDB/samples/Makefile
@@ -5,7 +5,7 @@
 #
 
 .PHONY: projects
-clean all: projects
+clean distclean all: projects
 projects:
 	$(MAKE) -C SQLToMongo $(MAKECMDGOALS)
 
diff --git a/Net/samples/Makefile b/Net/samples/Makefile
index f511f043b9..4285e4cb36 100644
--- a/Net/samples/Makefile
+++ b/Net/samples/Makefile
@@ -5,7 +5,7 @@
 #
 
 .PHONY: projects
-clean all: projects
+clean distclean all: projects
 projects:
 	$(MAKE) -C dict $(MAKECMDGOALS)
 	$(MAKE) -C TimeServer $(MAKECMDGOALS)
diff --git a/PDF/samples/Makefile b/PDF/samples/Makefile
index 4bbe1b8ec7..4fb5939395 100644
--- a/PDF/samples/Makefile
+++ b/PDF/samples/Makefile
@@ -5,7 +5,7 @@
 #
 
 .PHONY: projects
-clean all: projects
+clean distclean all: projects
 projects:
 	$(MAKE) -C Text $(MAKECMDGOALS)
 	$(MAKE) -C Image $(MAKECMDGOALS)
diff --git a/PageCompiler/samples/Makefile b/PageCompiler/samples/Makefile
index 87f455de92..c1eb28cb20 100644
--- a/PageCompiler/samples/Makefile
+++ b/PageCompiler/samples/Makefile
@@ -5,6 +5,6 @@
 #
 
 .PHONY: projects
-clean all: projects
+clean distclean all: projects
 projects:
 	$(MAKE) -C HTTPTimeServer $(MAKECMDGOALS)
diff --git a/Prometheus/samples/Makefile b/Prometheus/samples/Makefile
index 236cef1aec..d53d0bd9be 100644
--- a/Prometheus/samples/Makefile
+++ b/Prometheus/samples/Makefile
@@ -5,6 +5,6 @@
 #
 
 .PHONY: projects
-clean all: projects
+clean distclean all: projects
 projects:
 	$(MAKE) -C MetricsSample $(MAKECMDGOALS)
diff --git a/SevenZip/samples/Makefile b/SevenZip/samples/Makefile
index 8531446ff7..2ad323960c 100644
--- a/SevenZip/samples/Makefile
+++ b/SevenZip/samples/Makefile
@@ -5,6 +5,6 @@
 #
 
 .PHONY: projects
-clean all: projects
+clean distclean all: projects
 projects:
 	$(MAKE) -C un7zip $(MAKECMDGOALS)
diff --git a/Util/samples/Makefile b/Util/samples/Makefile
index af5e746dfd..0a147cb7da 100644
--- a/Util/samples/Makefile
+++ b/Util/samples/Makefile
@@ -5,7 +5,7 @@
 #
 
 .PHONY: projects
-clean all: projects
+clea distclean all: projects
 projects:
 	$(MAKE) -C SampleApp $(MAKECMDGOALS)
 	$(MAKE) -C SampleServer $(MAKECMDGOALS)
diff --git a/XML/samples/Makefile b/XML/samples/Makefile
index 182b840809..62f8eedb4f 100644
--- a/XML/samples/Makefile
+++ b/XML/samples/Makefile
@@ -5,7 +5,7 @@
 #
 
 .PHONY: projects
-clean all: projects
+clean distclean all: projects
 projects:
 	$(MAKE) -C DOMParser $(MAKECMDGOALS)
 	$(MAKE) -C DOMWriter $(MAKECMDGOALS)
diff --git a/Zip/samples/Makefile b/Zip/samples/Makefile
index f5da6111fb..282d7f799a 100644
--- a/Zip/samples/Makefile
+++ b/Zip/samples/Makefile
@@ -5,7 +5,7 @@
 #
 
 .PHONY: projects
-clean all: projects
+clean distclean all: projects
 projects:
 	$(MAKE) -C unzip $(MAKECMDGOALS)
 	$(MAKE) -C zip $(MAKECMDGOALS)