diff --git a/autogen.spec b/autogen.spec
index 263711d..a07ea94 100644
--- a/autogen.spec
+++ b/autogen.spec
@@ -63,7 +63,8 @@ sed -i 's|errors.test||' autoopts/test/Makefile.in
 
 %build
 # Static libraries are needed to run test-suite.
-export CFLAGS="$RPM_OPT_FLAGS -Wno-implicit-fallthrough -Wno-format-overflow"
+export CFLAGS="$RPM_OPT_FLAGS -Wno-implicit-fallthrough -Wno-format-overflow \
+		-Wno-format-truncation"
 %configure
 
 # Omit unused direct shared library dependencies.