diff --git a/share/examples/tests/tests/atf/Makefile b/share/examples/tests/tests/atf/Makefile
index 305d66c51f38..7614767b6e0a 100644
--- a/share/examples/tests/tests/atf/Makefile
+++ b/share/examples/tests/tests/atf/Makefile
@@ -46,3 +46,7 @@ file1:
 	@echo "File 1" > ${.TARGET}
 
 .include <bsd.test.mk>
+
+.if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 180000
+CWARNFLAGS.printf_test.c+=	-Wno-format-truncation
+.endif
diff --git a/share/examples/tests/tests/plain/Makefile b/share/examples/tests/tests/plain/Makefile
index 2594968a6f44..462324309f6a 100644
--- a/share/examples/tests/tests/plain/Makefile
+++ b/share/examples/tests/tests/plain/Makefile
@@ -46,3 +46,7 @@ file1:
 	@echo "File 1" > ${.TARGET}
 
 .include <bsd.test.mk>
+
+.if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 180000
+CWARNFLAGS.printf_test.c+=	-Wno-format-truncation
+.endif
diff --git a/share/examples/tests/tests/tap/Makefile b/share/examples/tests/tests/tap/Makefile
index 5b829afd5838..86d3f6805045 100644
--- a/share/examples/tests/tests/tap/Makefile
+++ b/share/examples/tests/tests/tap/Makefile
@@ -46,3 +46,7 @@ file1:
 	@echo "File 1" > ${.TARGET}
 
 .include <bsd.test.mk>
+
+.if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 180000
+CWARNFLAGS.printf_test.c+=	-Wno-format-truncation
+.endif