diff --git a/mswin32/winfix.cc b/mswin32/winfix.cc
index dbf73a9fe..cbd88dd03 100644
--- a/mswin32/winfix.cc
+++ b/mswin32/winfix.cc
@@ -287,7 +287,7 @@ void win_init()
 	PMIB_IPADDRTABLE pIp = 0;
 	int i;
 	int numipsleft;
-	int pcap_driver;
+	int pcap_driver = PCAP_DRIVER_NONE;
 
 	init_dll_path();
 
diff --git a/nping/winfix.cc b/nping/winfix.cc
index a378d2840..530d9fbdc 100644
--- a/nping/winfix.cc
+++ b/nping/winfix.cc
@@ -287,7 +287,7 @@ void win_init()
 	PMIB_IPADDRTABLE pIp = 0;
 	int i;
 	int numipsleft;
-	int pcap_driver;
+	int pcap_driver = PCAP_DRIVER_NONE;
 
 	init_dll_path();