diff --git a/mlpack.spec b/mlpack.spec
index c6cb9cc..5abe8e9 100644
--- a/mlpack.spec
+++ b/mlpack.spec
@@ -155,6 +155,12 @@ cmake -D CMAKE_C_FLAGS="`echo %{optflags} | sed 's/-pipe//g' | sed 's/$/ --param
 cd ..;
 %endif
 
+%ifarch i686
+cd %{_vpath_builddir};
+cmake -D CMAKE_C_FLAGS="`echo %{optflags} | sed 's/-pipe//g' | sed 's/$/ --param ggc-min-heapsize=32768 --param ggc-min-expand=1/'`" -D CMAKE_CXX_FLAGS="`echo %{optflags} | sed 's/-pipe//g' | sed 's/$/ --param ggc-min-heapsize=32768 --param ggc-min-expand=1/'`" .
+cd ..;
+%endif
+
 # Don't use %make because it could use too much RAM with multiple cores on Koji...
 %{cmake_build}
 # Build documentation ('doc' is not in the list of default targets).