diff --git a/tests/utils/utils_test.c b/tests/utils/utils_test.c
index 223f67d..70d017f 100644
--- a/tests/utils/utils_test.c
+++ b/tests/utils/utils_test.c
@@ -585,7 +585,7 @@
 
 	printf("- never passthru:\n");
 	res = osmo_quote_str(printable, -1);
-	if (res != printable)
+	if (strcmp(res, printable))
 		printf("NOT passed through. '%s'\n", res);
 	else
 		printf("passed through unchanged '%s'\n", res);
@@ -596,14 +596,14 @@
 	printf("- truncation when too long:\n");
 	memset(in_buf, 'x', sizeof(in_buf));
 	in_buf[0] = '\a';
-	in_buf[5] = 'E';
+	in_buf[6] = 'E';
 	memset(out_buf, 0x7f, sizeof(out_buf));
 	printf("'%s'\n", osmo_quote_str_buf((const char *)in_buf, sizeof(in_buf), out_buf, 10));
 	OSMO_ASSERT(out_buf[10] == 0x7f);
 
 	printf("- always truncation, even when no escaping needed:\n");
 	memset(in_buf, 'x', sizeof(in_buf));
-	in_buf[6] = 'E'; /* dst has 10, less 2 quotes and nul, leaves 7, i.e. in[6] is last */
+	in_buf[7] = 'E'; /* dst has 10, less 1 quote and nul, leaves 8, i.e. in[7] is last */
 	in_buf[20] = '\0';
 	memset(out_buf, 0x7f, sizeof(out_buf));
 	printf("'%s'\n", osmo_quote_str_buf((const char *)in_buf, -1, out_buf, 10));