diff --git a/ccminer.cpp b/ccminer.cpp
index 12f704f..2bc231b 100644
--- a/ccminer.cpp
+++ b/ccminer.cpp
@@ -1067,7 +1067,7 @@ static bool get_mininginfo(CURL *curl, struct work *work)
 			}
 			key = json_object_get(res, "netmhashps");
 			if (key && json_is_real(key)) {
-				net_hashrate = (json_real_value(key) * 1e6);
+				net_hashrate = (uint64_t)(json_real_value(key) * 1e6);
 			}
 			key = json_object_get(res, "blocks");
 			if (key && json_is_integer(key)) {
diff --git a/cpuminer-config.h b/cpuminer-config.h
index 3172480..203b281 100644
--- a/cpuminer-config.h
+++ b/cpuminer-config.h
@@ -162,7 +162,7 @@
 #define PACKAGE_NAME "ccminer"
 
 /* Define to the full name and version of this package. */
-#define PACKAGE_STRING "ccminer 1.6.5-C11"
+#define PACKAGE_STRING "ccminer 1.6.6"
 
 /* Define to the one symbol short name of this package. */
 #define PACKAGE_TARNAME "ccminer"
@@ -171,7 +171,7 @@
 #define PACKAGE_URL "http://github.com/tpruvot/ccminer"
 
 /* Define to the version of this package. */
-#define PACKAGE_VERSION "1.6.5-C11"
+#define PACKAGE_VERSION "1.6.6"
 
 /* If using the C implementation of alloca, define if you know the
    direction of stack growth for your system; otherwise it will be
@@ -185,7 +185,7 @@
 #define STDC_HEADERS 1
 
 /* Version number of package */
-#define VERSION "1.6.5-C11"
+#define VERSION "1.6.6"
 
 /* Define curl_free() as free() if our version of curl lacks curl_free. */
 /* #undef curl_free */
diff --git a/nvml.cpp b/nvml.cpp
index f810c8d..417a86a 100644
--- a/nvml.cpp
+++ b/nvml.cpp
@@ -338,7 +338,7 @@ int nvml_set_clocks(nvml_handle *nvmlh, int dev_id)
 	nclocks = min(nclocks, 127);
 	if (nclocks)
 		nvmlh->nvmlDeviceGetSupportedMemoryClocks(nvmlh->devs[n], &nclocks, clocks);
-	for (int8_t u=0; u < nclocks; u++) {
+	for (uint8_t u=0; u < nclocks; u++) {
 		// ordered by pstate (so highest is first memory clock - P0)
 		if (clocks[u] <= mem_clk) {
 			mem_clk = clocks[u];