diff --git a/sourcemm/CSmmAPI.cpp b/sourcemm/CSmmAPI.cpp
index fc06302..79ba7d0 100644
--- a/sourcemm/CSmmAPI.cpp
+++ b/sourcemm/CSmmAPI.cpp
@@ -334,14 +334,23 @@ int CSmmAPI::FormatIface(char iface[], unsigned int maxlength)
 
 void *CSmmAPI::InterfaceSearch(CreateInterfaceFn fn, const char *iface, int max, int *ret)
 {
+	char _if[256];	/* assume no interface goes beyond this */
 	size_t len = strlen(iface);
 	int num = 0;
 	void *pf = NULL;
-	char *_if = new char[len + 2];
 
 	if (max > 999)
 		max = 999;
 
+	if (len + 4 > sizeof(_if))
+	{
+		if (ret)
+		{
+			*ret = IFACE_FAILED;
+		}
+		return NULL;
+	}
+
 	strcpy(_if, iface);
 
 	do
@@ -352,8 +361,6 @@ void *CSmmAPI::InterfaceSearch(CreateInterfaceFn fn, const char *iface, int max,
 			break;
 	} while (( num = FormatIface(_if, len+1) ));
 
-	delete[] _if;
-
 	return pf;
 }