diff --git a/server/modules/authenticator/PAM/PAMAuth/pam_auth.cc b/server/modules/authenticator/PAM/PAMAuth/pam_auth.cc
index fb883cc99..abcb3ed90 100644
--- a/server/modules/authenticator/PAM/PAMAuth/pam_auth.cc
+++ b/server/modules/authenticator/PAM/PAMAuth/pam_auth.cc
@@ -40,8 +40,6 @@ const string FIELD_HAS_PROXY = "proxy_grant";
 const string FIELD_DB = "db";
 const string FIELD_ROLE = "role";
 
-const int NUM_FIELDS = 6;
-
 const char* SQLITE_OPEN_FAIL = "Failed to open SQLite3 handle for file '%s': '%s'";
 const char* SQLITE_OPEN_OOM = "Failed to allocate memory for SQLite3 handle for file '%s'.";
 
diff --git a/server/modules/authenticator/PAM/PAMAuth/pam_auth.hh b/server/modules/authenticator/PAM/PAMAuth/pam_auth.hh
index abf0a3822..ab499566b 100644
--- a/server/modules/authenticator/PAM/PAMAuth/pam_auth.hh
+++ b/server/modules/authenticator/PAM/PAMAuth/pam_auth.hh
@@ -36,7 +36,6 @@ extern const string FIELD_DEF_ROLE;
 extern const string FIELD_HAS_PROXY;
 extern const string FIELD_IS_ROLE;
 extern const string FIELD_ROLE;
-extern const int NUM_FIELDS;
 
 extern const char* SQLITE_OPEN_FAIL;
 extern const char* SQLITE_OPEN_OOM;
diff --git a/server/modules/authenticator/PAM/PAMAuth/pam_instance.cc b/server/modules/authenticator/PAM/PAMAuth/pam_instance.cc
index 94dd5e526..5aec340e5 100644
--- a/server/modules/authenticator/PAM/PAMAuth/pam_instance.cc
+++ b/server/modules/authenticator/PAM/PAMAuth/pam_instance.cc
@@ -491,7 +491,6 @@ void PamInstance::diagnostic(DCB* dcb)
 
 static int diag_cb_json(json_t* data, int columns, char** row, char** field_names)
 {
-    mxb_assert(columns == NUM_FIELDS);
     json_t* obj = json_object();
     for (int i = 0; i < columns; i++)
     {