diff --git a/tests/periph_eeprom/main.c b/tests/periph_eeprom/main.c
index a4793a6abe2ecb2be296bc98a099cd52b6673a46..887b01332156c648ce863d12ea40e9639f1e89b5 100644
--- a/tests/periph_eeprom/main.c
+++ b/tests/periph_eeprom/main.c
@@ -226,7 +226,7 @@ static int cmd_test(int argc, char **argv)
 
     char result[4];
     ret = eeprom_read(0, (uint8_t *)result, 4);
-    assert(strncmp((const char *)result, (const char *)expected, 4) == 0);
+    assert(strncmp(result, expected, 4) == 0);
     assert(ret == 4);
 
     /* read/write at end of EEPROM */
@@ -234,7 +234,7 @@ static int cmd_test(int argc, char **argv)
     assert(ret == 4);
     memset(result, 0, 4);
     ret = eeprom_read(EEPROM_SIZE - 4, (uint8_t *)result, 4);
-    assert(strncmp((const char *)result, expected, 4) == 0);
+    assert(strncmp(result, expected, 4) == 0);
     assert(ret == 4);
 
     /* read/write single byte */
@@ -249,24 +249,24 @@ static int cmd_test(int argc, char **argv)
     eeprom_clear(0, 4);
     memset(result, 0, 4);
     ret = eeprom_read(0, (uint8_t *)result, 4);
-    assert(strncmp((const char *)result, "", 4) == 0);
+    assert(strncmp(result, "", 4) == 0);
     assert(ret == 4);
 
     eeprom_clear(EEPROM_SIZE - 4, 4);
     ret = eeprom_read(EEPROM_SIZE - 4, (uint8_t *)result, 4);
-    assert(strncmp((const char *)result, "", 4) == 0);
+    assert(strncmp(result, "", 4) == 0);
     assert(ret == 4);
 
     /* set some bytes */
     eeprom_set(0, 'A', 4);
     ret = eeprom_read(0, (uint8_t *)result, 4);
-    assert(strncmp((const char *)result, "AAAA", 4) == 0);
+    assert(strncmp(result, "AAAA", 4) == 0);
     assert(ret == 4);
 
     memset(result, 0, 4);
     eeprom_set(EEPROM_SIZE - 4, 'A', 4);
     ret = eeprom_read(EEPROM_SIZE - 4, (uint8_t *)result, 4);
-    assert(strncmp((const char *)result, "AAAA", 4) == 0);
+    assert(strncmp(result, "AAAA", 4) == 0);
     assert(ret == 4);
 
     puts("SUCCESS");