diff --git a/src/smblib/smblib.c b/src/smblib/smblib.c
index d06a3e96d1886030cb1636a1df2877fc11eb22fb..e7d43c141c80e95f0343408f38f776f2a36c4f81 100644
--- a/src/smblib/smblib.c
+++ b/src/smblib/smblib.c
@@ -323,7 +323,7 @@ int SMBCALL smb_lock(smb_t* smb)
 		return(SMB_ERR_LOCK);
 	}
 	close(file);
-	return(0);
+	return(SMB_SUCCESS);
 }
 
 int SMBCALL smb_unlock(smb_t* smb)
@@ -337,17 +337,17 @@ int SMBCALL smb_unlock(smb_t* smb)
 			,errno,STRERROR(errno),str);
 		return(SMB_ERR_DELETE);
 	}
-	return(0);
+	return(SMB_SUCCESS);
 }
 
-int SMBCALL smb_islocked(smb_t* smb)
+BOOL SMBCALL smb_islocked(smb_t* smb)
 {
 	char	str[MAX_PATH+1];
 
 	if(access(smb_lockfname(smb,str,sizeof(str)-1),0)!=0)
-		return(0);
+		return(FALSE);
 	safe_snprintf(smb->last_error,sizeof(smb->last_error),"%s exists",str);
-	return(1);
+	return(TRUE);
 }
 
 /****************************************************************************/
@@ -2008,7 +2008,7 @@ int SMBCALL smb_freemsg_dfields(smb_t* smb, smbmsg_t* msg, ushort refs)
 			,msg->dfield[x].length,refs))!=SMB_SUCCESS)
 			return(i); 
 	}
-	return(0);
+	return(SMB_SUCCESS);
 }
 
 /****************************************************************************/
diff --git a/src/smblib/smblib.h b/src/smblib/smblib.h
index 17a4ef73241c53413ffe79a1bbc1da8920577a4c..ab36c055f86a6fb21f9fd00ad4ff5b2db71bb957 100644
--- a/src/smblib/smblib.h
+++ b/src/smblib/smblib.h
@@ -112,7 +112,7 @@ SMBEXPORT int 		SMBCALL smb_stack(smb_t* smb, int op);
 SMBEXPORT int 		SMBCALL smb_trunchdr(smb_t* smb);
 SMBEXPORT int		SMBCALL smb_lock(smb_t* smb);
 SMBEXPORT int		SMBCALL smb_unlock(smb_t* smb);
-SMBEXPORT int		SMBCALL smb_islocked(smb_t* smb);
+SMBEXPORT BOOL		SMBCALL smb_islocked(smb_t* smb);
 SMBEXPORT int 		SMBCALL smb_locksmbhdr(smb_t* smb);
 SMBEXPORT int 		SMBCALL smb_getstatus(smb_t* smb);
 SMBEXPORT int 		SMBCALL smb_putstatus(smb_t* smb);