diff --git a/bzflag.spec b/bzflag.spec
index 511a1c3..c2004e8 100644
--- a/bzflag.spec
+++ b/bzflag.spec
@@ -56,7 +56,8 @@ CFLAGS='-fPIC %{optflags} -fno-strict-aliasing' \
 CXXFLAGS='-fPIC %{optflags} -fno-strict-aliasing' \
 LDFLAGS='-pie' \
 %configure --libdir=%{_libdir}/%{name} --with-SDL=1 \
-    --prefix=%{_prefix} --exec-prefix=%{_prefix}
+    --prefix=%{_prefix} --exec-prefix=%{_prefix} \
+    --with-sdl-prefix=%{_prefix} --with-sdl-exec-prefix=%{_prefix}
 make %{?_smp_mflags}
 
 %install