diff --git a/irdb-libs/ir_builders/fill_in_indtargs.cpp b/irdb-libs/ir_builders/fill_in_indtargs.cpp
index 800d8bcccce3a7615a882d9834a5b4d81e2de23d..67532fa100c68e5d27cc062bb7836cf1b20aca3c 100644
--- a/irdb-libs/ir_builders/fill_in_indtargs.cpp
+++ b/irdb-libs/ir_builders/fill_in_indtargs.cpp
@@ -2732,7 +2732,7 @@ V2:
 		//
 		auto table_size = 512U;
         if(getenv("MAX_JUMP_TABLE_CLAMP_SIZE")){
-            auto temp_table_size = atoi(getenv("MAX_JUMP_TABLE_CLAMP_SIZE"));
+            auto temp_table_size = strtol(getenv("MAX_JUMP_TABLE_CLAMP_SIZE"), nullptr, 10);
             if(temp_table_size > 0){
                 table_size = temp_table_size;
             }