diff --git a/packages/toolchain/math/ppl/build b/packages/toolchain/math/ppl/build
index 8912f188e1..bf10a37d8d 100755
--- a/packages/toolchain/math/ppl/build
+++ b/packages/toolchain/math/ppl/build
@@ -23,5 +23,5 @@ LDFLAGS="-Wl,-rpath,$ROOT/$TOOLCHAIN/lib" \
              --with-libgmp-prefix="$ROOT/$TOOLCHAIN" \
              --with-libgmpxx-prefix="$ROOT/$TOOLCHAIN" \
 
-make
+make -j1
 make install