diff --git a/tests/sys/fs/fusefs/Makefile b/tests/sys/fs/fusefs/Makefile
--- a/tests/sys/fs/fusefs/Makefile
+++ b/tests/sys/fs/fusefs/Makefile
@@ -80,7 +80,9 @@
 .if ${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 80000
 CXXWARNFLAGS+=	-Wno-class-memaccess
 .endif
-# Supress warnings about deprecated implicit copy constructors in gtest.
+# Suppress false warning about set but unused DNAME in inval_entry_below_root
+CXXWARNFLAGS.gcc+= -Wno-unused-but-set-variable
+# Suppress warnings about deprecated implicit copy constructors in gtest.
 CXXWARNFLAGS+=  -Wno-deprecated-copy
 CXXFLAGS+=	-I${SRCTOP}/tests
 CXXFLAGS+=	-I${FUSEFS}