diff --git a/intl/icu/source/common/uinvchar.c b/intl/icu/source/common/uinvchar.c
index f874edd9a27..58f8a233a73 100644
--- a/intl/icu/source/common/uinvchar.c
+++ b/intl/icu/source/common/uinvchar.c
@@ -429,7 +429,7 @@ uprv_copyEbcdic(const UDataSwapper *ds,
     while(count>0) {
         c=*s++;
         if(c!=0 && ((c=asciiFromEbcdic[c])==0 || !UCHAR_IS_INVARIANT(c))) {
-            udata_printError(ds, "uprv_copyEbcdic() string[%] contains a variant character in position %d\n",
+            udata_printError(ds, "uprv_copyEbcdic() string[%d] contains a variant character in position %d\n",
                              length, length-count);
             *pErrorCode=U_INVALID_CHAR_FOUND;
             return 0;
diff --git a/netwerk/protocol/websocket/WebSocketChannel.cpp b/netwerk/protocol/websocket/WebSocketChannel.cpp
index fea823d1508..a11347b4c2f 100644
--- a/netwerk/protocol/websocket/WebSocketChannel.cpp
+++ b/netwerk/protocol/websocket/WebSocketChannel.cpp
@@ -2703,7 +2703,7 @@ WebSocketChannel::OnProxyAvailable(nsICancelable *aRequest, nsIChannel *aChannel
     // call DNS callback directly without DNS resolver
     OnLookupComplete(nullptr, nullptr, NS_ERROR_FAILURE);
   } else {
-    LOG(("WebSocketChannel::OnProxyAvailable[%] checking DNS resolution\n", this));
+    LOG(("WebSocketChannel::OnProxyAvailable[%p] checking DNS resolution\n", this));
     nsresult rv = DoAdmissionDNS();
     if (NS_FAILED(rv)) {
       LOG(("WebSocket OnProxyAvailable [%p] DNS lookup failed\n", this));