diff --git a/src/network/utils/pcap-test.h b/src/network/utils/pcap-test.h
index 860b488c4..e1f7831de 100644
--- a/src/network/utils/pcap-test.h
+++ b/src/network/utils/pcap-test.h
@@ -41,14 +41,16 @@
     oss << filename;                                                    \
     std::string expected = CreateDataDirFilename (oss.str());           \
     std::string got = CreateTempDirFilename (oss.str());                \
-    uint32_t sec(0), usec(0), packets(0);				\
-    /** \todo support default PcapWriter snap length here */		\
-    bool diff = PcapFile::Diff (got, expected, sec, usec, packets);	\
+    uint32_t sec{0};                                                    \
+    uint32_t usec{0};                                                   \
+    uint32_t packets{0};                                                \
+    /** \todo support default PcapWriter snap length here */            \
+    bool diff = PcapFile::Diff (got, expected, sec, usec, packets);     \
     NS_TEST_EXPECT_MSG_EQ (diff, false,                                 \
-                           "PCAP traces "				\
-			   << got << " and " << expected		\
-                           << " differ starting from packet "		\
-			   << packets << " at " << sec << " s "		\
+                           "PCAP traces "                               \
+         << got << " and " << expected                                  \
+                           << " differ starting from packet "           \
+         << packets << " at " << sec << " s "                           \
                            << usec << " us");                           \
   } while (false)