diff --git a/packages/lang/Python/build b/packages/lang/Python/build
index c5d8facd8e..03a8759fcc 100755
--- a/packages/lang/Python/build
+++ b/packages/lang/Python/build
@@ -26,7 +26,7 @@ OPT="$HOST_CFLAGS" \
             --enable-unicode=ucs4 \
 
 OPT="$HOST_CFLAGS" \
-make python Parser/pgen
+make -j1 python Parser/pgen
 
 OPT="$HOST_CFLAGS" \
 PYTHON_MODULES_INCLUDE=/usr/include \
@@ -63,7 +63,7 @@ OPT="$CFLAGS -fno-strict-aliasing" \
             --without-cxx-main \
             --with-system-ffi \
 
-make  CC=$TARGET_CC \
+make  -j1 CC=$TARGET_CC \
       GNU_HOST=$TARGET_NAME \
       GNU_BUILD=$HOST_NAME \
       DESTDIR=$SYSROOT_PREFIX \