diff --git a/source/bforce/prot_binkp.c b/source/bforce/prot_binkp.c
index 0a9e84a..3c3d051 100644
--- a/source/bforce/prot_binkp.c
+++ b/source/bforce/prot_binkp.c
@@ -668,12 +668,12 @@ case BPMSG_ADR:              /* List of addresses */
             if (bstate->address_established) {
                 PROTO_ERROR("remote tries to change address");
             }
-            if( bstate->extracmd[0] !=-1 ) return 0; // suspend !!!
+            if( bstate->extracmd[0] != (char)-1 ) return 0; // suspend !!!
             binkp_process_ADR(buf+1);
 
 	    if( !state.n_remoteaddr ) {
 	        log("error: remote did not supplied any addresses");
-	        if( bstate->extracmd[0] !=-1 ) return 0; // suspend
+	        if( bstate->extracmd[0] != (char)-1 ) return 0; // suspend
 	        bstate->extracmd[0] = BPMSG_BSY;
 	        strcpy(bstate->extracmd+1, "No addresses was presented");
 		bstate->extraislast = true;
@@ -844,7 +844,7 @@ case BPMSG_OK:               /* Password was acknowleged (data ignored) */
             }
             if (session_addrs_lock(state.remoteaddrs, state.n_remoteaddr)) {
                 log("error: unable to lock");
-                if (bstate->extracmd[0]!=-1) return 0;
+                if (bstate->extracmd[0]!= (char)-1) return 0;
                 bstate->extracmd[0] = BPMSG_BSY;
                 strcpy(bstate->extracmd+1, "All addresses are busy");
 		bstate->extraislast = true;