diff --git a/libtgvoip.gyp b/libtgvoip.gyp
index 52fbea1..d5c6ec4 100644
--- a/libtgvoip.gyp
+++ b/libtgvoip.gyp
@@ -18,6 +18,7 @@
         'include_dirs': [
           '<(tgvoip_src_loc)/webrtc_dsp',
           '<(linux_path_opus_include)',
+          '/usr/include/openssl-1.0',
         ],
         'direct_dependent_settings': {
           'include_dirs': [