diff --git a/osmium-tool.spec b/osmium-tool.spec
index 418ba03..ca22edd 100644
--- a/osmium-tool.spec
+++ b/osmium-tool.spec
@@ -34,6 +34,10 @@ rm -rf include/rapidjson
 %build
 mkdir build
 cd build
+%ifarch armv7hl
+export CFLAGS="%{optflags} -fno-expensive-optimizations"
+export CXXFLAGS="%{optflags} -fno-expensive-optimizations"
+%endif
 %cmake ..
 %make_build