diff --git a/mlpack.spec b/mlpack.spec
index d418822..4805036 100644
--- a/mlpack.spec
+++ b/mlpack.spec
@@ -162,6 +162,9 @@ margins.  This package provides the Python bindings for mlpack.
 %{cmake} -D LIBDIR=%{_libdir} -D DEBUG=OFF -D PROFILE=OFF -D PYTHON_EXECUTABLE=$(which python2) .
 %endif
 
+# Remove -pipe for memory savings.
+cmake -D CFLAGS=`echo %{optflags} | sed -e 's/-pipe//g'` .
+
 # Don't use %make because it could use too much RAM with multiple cores on Koji...
 make
 # Build documentation ('doc' is not in the list of default targets).