diff --git a/brltty.spec b/brltty.spec
index 3451253..116dce2 100644
--- a/brltty.spec
+++ b/brltty.spec
@@ -166,7 +166,7 @@ cp -a . %{py3dir}
 for i in -I/usr/lib/jvm/java/include{,/linux}; do
       java_inc="$java_inc $i"
 done
-export CPPFLAGS="$java_inc" CFLAGS="%{optflags} -fno-strict-aliasing" \
+export CPPFLAGS="$java_inc"
 
 export CFLAGS="%{optflags} -fno-strict-aliasing"
 export CXXFLAGS="%{optflags} -fno-strict-aliasing"