diff --git a/soxr.spec b/soxr.spec
index c1b21e2..c3f775a 100644
--- a/soxr.spec
+++ b/soxr.spec
@@ -31,7 +31,8 @@ developing applications that use %{name}.
 
 %build
 export LDFLAGS="-Wl,--as-needed"
-%cmake -DCMAKE_BUILD_TYPE=RelWithDebInfo
+%cmake -DCMAKE_BUILD_TYPE=RelWithDebInfo \
+       -DWITH_CR32S=FALSE
 %cmake_build