diff --git a/core/CConVarManager.cpp b/core/CConVarManager.cpp
index e5627007..8320888e 100644
--- a/core/CConVarManager.cpp
+++ b/core/CConVarManager.cpp
@@ -259,7 +259,7 @@ void CConVarManager::HookConVarChange(IPluginContext *pContext, ConVar *cvar, fu
 	// This shouldn't happen...
 	if (func == NULL)
 	{
-		pContext->ThrowNativeError("Invalid function: %d", funcid);
+		pContext->ThrowNativeError("Invalid function specified");
 		return;
 	}
 
@@ -302,7 +302,7 @@ void CConVarManager::UnhookConVarChange(IPluginContext *pContext, ConVar *cvar,
 	// This shouldn't happen...
 	if (func == NULL)
 	{
-		pContext->ThrowNativeError("Invalid function: %d", funcid);
+		pContext->ThrowNativeError("Invalid function specified");
 		return;
 	}
 
@@ -315,14 +315,14 @@ void CConVarManager::UnhookConVarChange(IPluginContext *pContext, ConVar *cvar,
 		// If the forward doesn't exist, we can't unhook anything
 		if (fwd == NULL)
 		{
-			pContext->ThrowNativeError("Convar \"%s\" has no active hook.", cvar->GetName());
+			pContext->ThrowNativeError("Convar \"%s\" has no active hook", cvar->GetName());
 			return;
 		}
 
 		// Remove the function from the forward's list
 		if (!fwd->RemoveFunction(func))
 		{
-			pContext->ThrowNativeError("Function %d is not a valid hook callback for convar \"%s\"", funcid, cvar->GetName());
+			pContext->ThrowNativeError("Invalid hook callback specified for convar \"%s\"", cvar->GetName());
 			return;
 		}
 
@@ -362,4 +362,3 @@ void CConVarManager::OnConVarChanged(ConVar *cvar, const char *oldValue)
 	fwd->PushString(oldValue);
 	fwd->Execute(NULL);
 }
-
diff --git a/core/CDbgReporter.cpp b/core/CDbgReporter.cpp
index f2f46ad8..601de0e5 100644
--- a/core/CDbgReporter.cpp
+++ b/core/CDbgReporter.cpp
@@ -41,7 +41,7 @@ void CDbgReporter::OnContextExecuteError(IPluginContext *ctx, IContextTrace *err
 		const char *custerr;
 		if ((custerr=error->GetCustomErrorString()) != NULL)
 		{
-			g_Logger.LogError("[SM] Native \"%s\" reported: \"%s\"", lastname, custerr);
+			g_Logger.LogError("[SM] Native \"%s\" reported: %s", lastname, custerr);
 		} else {
 			g_Logger.LogError("[SM] Native \"%s\" encountered a generic error.", lastname);
 		}
diff --git a/core/smn_convar.cpp b/core/smn_convar.cpp
index ef7acf11..9efccae6 100644
--- a/core/smn_convar.cpp
+++ b/core/smn_convar.cpp
@@ -25,7 +25,7 @@ static cell_t sm_CreateConVar(IPluginContext *pContext, const cell_t *params)
 	// While the engine seems to accept a blank convar name, it causes a crash upon server quit
 	if (name == NULL || strcmp(name, "") == 0)
 	{
-		return pContext->ThrowNativeError("Null or blank convar name is not allowed.");
+		return pContext->ThrowNativeError("Null or blank convar name is not allowed");
 	}
 
 	pContext->LocalToString(params[2], &defaultVal);