diff --git a/tpm2-tools.spec b/tpm2-tools.spec
index 63e76d4..9495427 100644
--- a/tpm2-tools.spec
+++ b/tpm2-tools.spec
@@ -36,7 +36,7 @@ tpm2-tools is a batch of testing tools for tpm2.0. It is based on tpm2-tss.
 
 %build
 %configure --prefix=/usr --disable-static --disable-silent-rules
-%make_build
+%make_build -Wimplicit-fallthrough=0
 
 %install
 %make_install