diff --git a/src/iscsi-inq.c b/src/iscsi-inq.c
index cc15c90..d694dad 100644
--- a/src/iscsi-inq.c
+++ b/src/iscsi-inq.c
@@ -243,7 +243,7 @@ int main(int argc, const char *argv[])
 	}
 	extra_argv = poptGetArgs(pc);
 	if (extra_argv) {
-		url = *extra_argv;
+		url = strdup(*extra_argv);
 		extra_argv++;
 		while (extra_argv[extra_argc]) {
 			extra_argc++;
diff --git a/src/iscsi-ls.c b/src/iscsi-ls.c
index 7d7ac17..3ffc9bc 100644
--- a/src/iscsi-ls.c
+++ b/src/iscsi-ls.c
@@ -340,7 +340,7 @@ int main(int argc, const char *argv[])
 	}
 	extra_argv = poptGetArgs(pc);
 	if (extra_argv) {
-		url = *extra_argv;
+		url = strdup(*extra_argv);
 		extra_argv++;
 		while (extra_argv[extra_argc]) {
 			extra_argc++;
diff --git a/src/iscsi-readcapacity16.c b/src/iscsi-readcapacity16.c
index 31503d8..d286d70 100644
--- a/src/iscsi-readcapacity16.c
+++ b/src/iscsi-readcapacity16.c
@@ -86,7 +86,7 @@ int main(int argc, const char *argv[])
 	}
 	extra_argv = poptGetArgs(pc);
 	if (extra_argv) {
-		url = *extra_argv;
+		url = strdup(*extra_argv);
 		extra_argv++;
 		while (extra_argv[extra_argc]) {
 			extra_argc++;
diff --git a/test-tool/iscsi-test.c b/test-tool/iscsi-test.c
index 1235cf1..29c8423 100644
--- a/test-tool/iscsi-test.c
+++ b/test-tool/iscsi-test.c
@@ -410,7 +410,7 @@ int main(int argc, const char *argv[])
 	}
 	extra_argv = poptGetArgs(pc);
 	if (extra_argv) {
-		url = *extra_argv;
+		url = strdup(*extra_argv);
 		extra_argv++;
 		while (extra_argv[extra_argc]) {
 			extra_argc++;