diff --git a/src/javascript/binding.gyp.cmake b/src/javascript/binding.gyp.cmake
index 8fecc19..4675e26 100644
--- a/src/javascript/binding.gyp.cmake
+++ b/src/javascript/binding.gyp.cmake
@@ -10,7 +10,7 @@
 @mraa_LIB_INCLUDE_DIRS_GYP@
                       ],
       'variables': {
-          "v8_version%": "<!(node -e 'console.log(process.versions.v8)' | sed 's/\.//g')",
+          "v8_version%": "<!(node -e 'console.log(process.versions.v8)' | sed 's/\.//g' | cut -c 1-5)",
           "arch%": "<!(node -e 'console.log(process.arch)')"
       },
       'cflags_cc!': [ '-fno-rtti', '-fno-exceptions' ],