diff --git a/tools/logger/convert.c b/tools/logger/convert.c
index 4c209ab04701..2e23f061c156 100644
--- a/tools/logger/convert.c
+++ b/tools/logger/convert.c
@@ -60,8 +60,7 @@ struct proc_ldc_entry {
 	uintptr_t params[TRACE_MAX_PARAMS_COUNT];
 };
 
-static const char *BAD_PTR_STR = "<bad uid ptr 0x%.8x>";
-
+#define BAD_PTR_STR "<bad uid ptr 0x%.8x>"
 #define UUID_LOWER "%s%s%s<%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x>%s%s%s"
 #define UUID_UPPER "%s%s%s<%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X>%s%s%s"
 
@@ -313,7 +312,7 @@ static unsigned int timestamp_width(unsigned int precision)
 	 * gcc 9.3, this avoids a very long precision causing snprintf()
 	 * to truncate time_fmt
 	 */
-	assert(precision >= 0 && precision < 20);
+	assert(precision < 20);
 	/*
 	 * 12 digits for units is enough for 1M seconds = 11 days which
 	 * should be enough for most test runs.