diff --git a/src/shogun/lib/external/SFMT/SFMT.h b/src/shogun/lib/external/SFMT/SFMT.h
index b03b181d0ff..0cabdf40051 100644
--- a/src/shogun/lib/external/SFMT/SFMT.h
+++ b/src/shogun/lib/external/SFMT/SFMT.h
@@ -34,6 +34,7 @@
 
 #ifndef SFMTST_H
 #define SFMTST_H
+#ifndef DOXYGEN_SHOULD_SKIP_THIS 
 #if defined(__cplusplus)
 extern "C" {
 #endif
@@ -292,4 +293,6 @@ inline static double sfmt_genrand_res53_mix(sfmt_t * sfmt)
 }
 #endif
 
+#endif /* DOXYGEN_SHOULD_SKIP_THIS */
+
 #endif