diff --git a/src/wifi/model/he-capabilities.h b/src/wifi/model/he-capabilities.h
index 0961933ac..12822aad3 100644
--- a/src/wifi/model/he-capabilities.h
+++ b/src/wifi/model/he-capabilities.h
@@ -290,7 +290,7 @@ private:
 std::ostream &operator << (std::ostream &os, const HeCapabilities &HeCapabilities);
 std::istream &operator >> (std::istream &is, HeCapabilities &HeCapabilities);
 
-ATTRIBUTE_HELPER_HEADER (HeCapabilities)
+ATTRIBUTE_HELPER_HEADER (HeCapabilities);
 
 } //namespace ns3
 
diff --git a/src/wifi/model/vht-capabilities.h b/src/wifi/model/vht-capabilities.h
index ed77b9d13..6577a4c6b 100644
--- a/src/wifi/model/vht-capabilities.h
+++ b/src/wifi/model/vht-capabilities.h
@@ -336,7 +336,7 @@ private:
 std::ostream &operator << (std::ostream &os, const VhtCapabilities &vhtcapabilities);
 std::istream &operator >> (std::istream &is, VhtCapabilities &vhtcapabilities);
 
-ATTRIBUTE_HELPER_HEADER (VhtCapabilities)
+ATTRIBUTE_HELPER_HEADER (VhtCapabilities);
 
 } //namespace ns3