diff --git a/include/qb/qbdefs.h b/include/qb/qbdefs.h
index 21d3627..25eb1bf 100644
--- a/include/qb/qbdefs.h
+++ b/include/qb/qbdefs.h
@@ -79,6 +79,10 @@ extern "C" {
 #define typeof __typeof__
 #endif /* ANSI */
 
+#if defined (__GNUC__) && defined (__STRICT_ANSI__)
+#define va_copy(_a, _b) *_a = *_b
+#endif /* ANSI */
+
 #if  __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)
 #define QB_GNUC_DEPRECATED                            \
   __attribute__((__deprecated__))
diff --git a/lib/log_format.c b/lib/log_format.c
index c370880..0cd07c7 100644
--- a/lib/log_format.c
+++ b/lib/log_format.c
@@ -371,13 +371,13 @@ qb_vsnprintf_deserialize(char *string, size_t str_len, const char *buf)
 			location += p - &string[location] + 1;
 			break;
 		}
-		// copy from current to the next %
+		/* copy from current to the next % */
 		len = p - format;
 		strncpy(&string[location], format, len);
 		location += len;
 		format = p;
 
-		// start building up the format for snprintf
+		/* start building up the format for snprintf */
 		fmt_pos = 0;
 		fmt[fmt_pos++] = *format;
 		format++;