diff --git a/libvpx.gyp b/libvpx.gyp
index c694455..96a1296 100644
--- a/libvpx.gyp
+++ b/libvpx.gyp
@@ -475,7 +475,7 @@
                 '-s', '<(ninja_obj_dir)/encoder/libvpx_asm_offsets_vp8.vp8_asm_enc_offsets.obj',
                 '-s', '<(PRODUCT_DIR)/obj/Source/WebKit/chromium/third_party/libvpx/<(libvpx_source)/vp8/encoder/libvpx_asm_offsets_vp8.vp8_asm_enc_offsets.obj',
               ],
-              'process_output_as_sources': 1,
+              'process_outputs_as_sources': 1,
             },
           ],
           'sources': [
@@ -549,7 +549,7 @@
                 '-s', '<(ninja_obj_dir)/encoder/libvpx_asm_offsets_vpx_scale.vpx_scale_asm_offsets.obj',
                 '-s', '<(PRODUCT_DIR)/obj/Source/WebKit/chromium/third_party/libvpx/<(libvpx_source)/vpx_scale/libvpx_asm_offsets_vpx_scale.vpx_scale_asm_offsets.obj',
               ],
-              'process_output_as_sources': 1,
+              'process_outputs_as_sources': 1,
             },
           ],
           'sources': [
diff --git a/unpack_lib_posix.gypi b/unpack_lib_posix.gypi
index f26ea13..d6bef6d 100644
--- a/unpack_lib_posix.gypi
+++ b/unpack_lib_posix.gypi
@@ -48,7 +48,7 @@
         '<@(unpack_lib_search_path_list)',
         '<@(ar_cmd)',
       ],
-      'process_output_as_sources': 1,
+      'process_outputs_as_sources': 1,
     },
   ],
 }