diff --git a/src/chklib.cpp b/src/chklib.cpp
index aa396c6..5abdc77 100644
--- a/src/chklib.cpp
+++ b/src/chklib.cpp
@@ -502,6 +502,7 @@ bool LibCheck(Function & pProc)
                         case TYPE_BYTE_SIGN: case TYPE_BYTE_UNSIGN:
                             pProc.liveOut.setReg(rAL);
                             break;
+                        case TYPE_STR:
                         case TYPE_PTR:
                             fprintf(stderr,"Warning assuming Large memory model\n");
                             pProc.liveOut.setReg(rAX).addReg(rDS);