diff --git a/include/maxscale/debug.h b/include/maxscale/debug.h
index e78ada35a..c2f3532d0 100644
--- a/include/maxscale/debug.h
+++ b/include/maxscale/debug.h
@@ -35,10 +35,12 @@ MXS_BEGIN_DECLS
 #if defined(SS_DEBUG) && defined(LOG_ASSERT)
 #include <maxscale/log_manager.h>
 # define ss_dassert(exp) do { if(!(exp)){\
-        MXS_ERROR("debug assert %s:%d\n", (char*)__FILE__, __LINE__);\
+        const char *debug_expr = #exp;  /** The MXS_ERROR marco doesn't seem to like stringification */ \
+        MXS_ERROR("debug assert at %s:%d failed: %s\n", (char*)__FILE__, __LINE__, debug_expr);\
         mxs_log_flush_sync(); assert(exp);} } while (false)
 #define ss_info_dassert(exp,info) do { if(!(exp)){\
-        MXS_ERROR("debug assert %s:%d %s\n", (char*)__FILE__, __LINE__, info);\
+        const char *debug_expr = #exp; \
+        MXS_ERROR("debug assert at %s:%d failed: %s (%s)\n", (char*)__FILE__, __LINE__, info, debug_expr);\
         mxs_log_flush_sync();assert(exp);} } while (false)
 # define ss_debug(exp) exp
 # define ss_dfprintf fprintf