diff --git a/headers/private/net/r5_compatibility.h b/headers/private/net/r5_compatibility.h
index 8b879e316c..1fdcadb160 100644
--- a/headers/private/net/r5_compatibility.h
+++ b/headers/private/net/r5_compatibility.h
@@ -38,6 +38,8 @@ struct r5_sockaddr_in {
 	char	sin_zero[4];
 };
 
+
+#ifdef _BEOS_R5_COMPATIBLE_
 extern bool __gR5Compatibility;
 extern addr_t __gNetworkStart;
 extern addr_t __gNetworkEnd;
@@ -67,6 +69,9 @@ check_r5_compatibility()
 	return true;
 #endif
 }
+#else
+#define check_r5_compatibility() (false)
+#endif
 
 
 #endif	// NET_R5_COMPATIBILITY_H
diff --git a/src/system/libnetwork/init.cpp b/src/system/libnetwork/init.cpp
index b21d4e2b1f..a9941ba1fa 100644
--- a/src/system/libnetwork/init.cpp
+++ b/src/system/libnetwork/init.cpp
@@ -16,6 +16,9 @@
 #include <string.h>
 
 
+#ifdef _BEOS_R5_COMPATIBLE_
+
+
 bool __gR5Compatibility = false;
 addr_t __gNetworkStart;
 addr_t __gNetworkEnd;
@@ -78,3 +81,6 @@ initialize_before(image_id our_image)
 	} while (enable == 0
 		&& get_next_image_info(B_CURRENT_TEAM, (int32*)&cookie, &info) == B_OK);
 }
+
+
+#endif