diff --git a/media/mtransport/test/ice_unittest.cpp b/media/mtransport/test/ice_unittest.cpp
index b1bf84884907..64ac19609979 100644
--- a/media/mtransport/test/ice_unittest.cpp
+++ b/media/mtransport/test/ice_unittest.cpp
@@ -2969,7 +2969,7 @@ void AddNonPairableCandidates(
             test_utils_));
         break;
       default:
-        UNIMPLEMENTED;
+        NR_UNIMPLEMENTED;
     }
   }
 
diff --git a/media/mtransport/third_party/nICEr/src/net/transport_addr.c b/media/mtransport/third_party/nICEr/src/net/transport_addr.c
index 6b3dfdc45d2b..4cec4e69f0f8 100644
--- a/media/mtransport/third_party/nICEr/src/net/transport_addr.c
+++ b/media/mtransport/third_party/nICEr/src/net/transport_addr.c
@@ -397,7 +397,7 @@ int nr_transport_addr_is_loopback(nr_transport_addr *addr)
               return 1;
             break;
           default:
-            UNIMPLEMENTED;
+            NR_UNIMPLEMENTED;
             break;
         }
         break;
@@ -407,7 +407,7 @@ int nr_transport_addr_is_loopback(nr_transport_addr *addr)
           return(1);
         break;
       default:
-        UNIMPLEMENTED;
+        NR_UNIMPLEMENTED;
     }
 
     return(0);
@@ -429,7 +429,7 @@ int nr_transport_addr_is_link_local(nr_transport_addr *addr)
         }
         break;
       default:
-        UNIMPLEMENTED;
+        NR_UNIMPLEMENTED;
     }
 
     return(0);
@@ -454,7 +454,7 @@ int nr_transport_addr_is_mac_based(nr_transport_addr *addr)
         }
         break;
       default:
-        UNIMPLEMENTED;
+        NR_UNIMPLEMENTED;
     }
     return(0);
   }
@@ -472,7 +472,7 @@ int nr_transport_addr_is_teredo(nr_transport_addr *addr)
         }
         break;
       default:
-        UNIMPLEMENTED;
+        NR_UNIMPLEMENTED;
     }
 
     return(0);
@@ -509,7 +509,7 @@ int nr_transport_addr_is_wildcard(nr_transport_addr *addr)
           return(1);
         break;
       default:
-        UNIMPLEMENTED;
+        NR_UNIMPLEMENTED;
     }
 
     return(0);
@@ -541,7 +541,7 @@ int nr_transport_addr_get_private_addr_range(nr_transport_addr *addr)
       case NR_IPV6:
         return(0);
       default:
-        UNIMPLEMENTED;
+        NR_UNIMPLEMENTED;
     }
 
     return(0);
diff --git a/media/mtransport/third_party/nICEr/src/net/transport_addr_reg.c b/media/mtransport/third_party/nICEr/src/net/transport_addr_reg.c
index fdacbae7a922..10f93f194760 100644
--- a/media/mtransport/third_party/nICEr/src/net/transport_addr_reg.c
+++ b/media/mtransport/third_party/nICEr/src/net/transport_addr_reg.c
@@ -178,7 +178,7 @@ nr_reg_set_transport_addr(NR_registry prefix, int keep, nr_transport_addr *addr)
           ABORT(r);
         break;
       default:
-        UNIMPLEMENTED;
+        NR_UNIMPLEMENTED;
         break;
     }
 
diff --git a/media/mtransport/third_party/nrappkit/src/util/libekr/r_macros.h b/media/mtransport/third_party/nrappkit/src/util/libekr/r_macros.h
index cdae0c18040f..ddfedd3c3653 100644
--- a/media/mtransport/third_party/nrappkit/src/util/libekr/r_macros.h
+++ b/media/mtransport/third_party/nrappkit/src/util/libekr/r_macros.h
@@ -130,7 +130,7 @@ int debug(int cls, char *format,...);
 #define DBG(a)
 #endif
 
-#define UNIMPLEMENTED do { fprintf(stderr,"%s:%d Function %s unimplemented\n",__FILE__,__LINE__,__FUNCTION__); abort(); } while(0)
+#define NR_UNIMPLEMENTED do { fprintf(stderr,"%s:%d Function %s unimplemented\n",__FILE__,__LINE__,__FUNCTION__); abort(); } while(0)
 
 #include "r_memory.h"