diff --git a/src/TypeDef.h b/src/TypeDef.h
index 6236b2be..a77bf6fe 100644
--- a/src/TypeDef.h
+++ b/src/TypeDef.h
@@ -81,6 +81,11 @@
 #define NC                                            (-1)
 #endif
 
+/*!
+  \brief A simple assert macro, will return on error.
+*/
+#define RADIOLIB_ASSERT(STATEVAR) { if(STATEVAR != ERR_NONE) { return(STATEVAR); } }
+
 /*!
   \defgroup shield_config Shield Configuration