diff --git a/tracecallback.go b/tracecallback.go
index 6291fe2..6a59282 100644
--- a/tracecallback.go
+++ b/tracecallback.go
@@ -85,7 +85,7 @@ func fillExpandedSQL(info *TraceInfo, db *C.sqlite3, pStmt unsafe.Pointer) {
 		panic("No SQLite statement pointer in P arg of trace_v2 callback")
 	}
 
-	expSQLiteCStr := C.sqlite3_expanded_sql(pStmt)
+	expSQLiteCStr := C.sqlite3_expanded_sql((*C.sqlite3_stmt)(pStmt))
 	if expSQLiteCStr == nil {
 		fillDBError(&info.DBError, db)
 		return