diff --git a/src/detect-tcpmss.c b/src/detect-tcpmss.c
index 7a8d03c35a..e644a15257 100644
--- a/src/detect-tcpmss.c
+++ b/src/detect-tcpmss.c
@@ -89,10 +89,9 @@ static inline int TcpmssMatch(const uint16_t parg, const uint8_t mode,
 /**
  * \brief This function is used to match TCPMSS rule option on a packet with those passed via tcpmss:
  *
- * \param t pointer to thread vars
  * \param det_ctx pointer to the pattern matcher thread
  * \param p pointer to the current packet
- * \param m pointer to the sigmatch that we will cast into DetectTcpmssData
+ * \param ctx pointer to the sigmatch that we will cast into DetectTcpmssData
  *
  * \retval 0 no match
  * \retval 1 match
@@ -255,7 +254,7 @@ error:
 }
 
 /**
- * \brief this function is used to atcpmssd the parsed tcpmss data into the current signature
+ * \brief this function is used to attach the parsed tcpmss data into the current signature
  *
  * \param de_ctx pointer to the Detection Engine Context
  * \param s pointer to the Current Signature
@@ -340,8 +339,8 @@ PrefilterPacketTcpmssCompare(PrefilterPacketHeaderValue v, void *smctx)
     if (v.u8[0] == a->mode &&
         v.u16[1] == a->arg1 &&
         v.u16[2] == a->arg2)
-        return TRUE;
-    return FALSE;
+        return true;
+    return false;
 }
 
 static int PrefilterSetupTcpmss(DetectEngineCtx *de_ctx, SigGroupHead *sgh)
@@ -358,10 +357,10 @@ static bool PrefilterTcpmssIsPrefilterable(const Signature *s)
     for (sm = s->init_data->smlists[DETECT_SM_LIST_MATCH] ; sm != NULL; sm = sm->next) {
         switch (sm->type) {
             case DETECT_TCPMSS:
-                return TRUE;
+                return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 #ifdef UNITTESTS