diff --git a/distrho/src/DistrhoDefines.h b/distrho/src/DistrhoDefines.h
index 2fceafaa..5ffd3dbc 100644
--- a/distrho/src/DistrhoDefines.h
+++ b/distrho/src/DistrhoDefines.h
@@ -37,7 +37,7 @@
 #  define DISTRHO_DLL_EXTENSION "dylib"
 # elif defined(__HAIKU__)
 #  define DISTRHO_OS_HAIKU      1
-# elif defined(__linux__)
+# elif defined(__linux__) || defined(__linux) || defined(__FreeBSD__) || defined(__GNU__)
 #  define DISTRHO_OS_LINUX      1
 # endif
 #endif