diff --git a/components/storage/blockdevice/COMPONENT_SD/TESTS/filesystem/fopen/fopen.cpp b/components/storage/blockdevice/COMPONENT_SD/TESTS/filesystem/fopen/fopen.cpp
index c2f5dfb7ef..f0bcea0e0d 100644
--- a/components/storage/blockdevice/COMPONENT_SD/TESTS/filesystem/fopen/fopen.cpp
+++ b/components/storage/blockdevice/COMPONENT_SD/TESTS/filesystem/fopen/fopen.cpp
@@ -90,7 +90,9 @@ FATFileSystem fs("sd", &sd);
 #define FSFAT_FOPEN_TEST_05      fsfat_fopen_test_05
 #define FSFAT_FOPEN_TEST_06      fsfat_fopen_test_06
 #define FSFAT_FOPEN_TEST_07      fsfat_fopen_test_07
+#if !defined(__MICROLIB)
 #define FSFAT_FOPEN_TEST_08      fsfat_fopen_test_08
+#endif
 #define FSFAT_FOPEN_TEST_09      fsfat_fopen_test_09
 #define FSFAT_FOPEN_TEST_10      fsfat_fopen_test_10
 #define FSFAT_FOPEN_TEST_11      fsfat_fopen_test_11
@@ -859,6 +861,7 @@ control_t fsfat_fopen_test_07(const size_t call_count)
  *
  * @return on success returns CaseNext to continue to next test case, otherwise will assert on errors.
  */
+#if !defined(__MICROLIB)
 control_t fsfat_fopen_test_08(const size_t call_count)
 {
     FILE *fp = NULL;
@@ -925,7 +928,7 @@ control_t fsfat_fopen_test_08(const size_t call_count)
     fclose(fp);
     return CaseNext;
 }
-
+#endif // !defined(__MICROLIB)
 
 /** @brief  test for operation of ftell()
  *
@@ -1575,7 +1578,10 @@ Case cases[] = {
 #endif
     Case("FSFAT_FOPEN_TEST_06: fopen() with bad filenames (minimal).", FSFAT_FOPEN_TEST_06),
     Case("FSFAT_FOPEN_TEST_07: fopen()/errno handling.", FSFAT_FOPEN_TEST_07),
+#if !defined(__MICROLIB)
+    // Microlib does not support ferror()
     Case("FSFAT_FOPEN_TEST_08: ferror()/clearerr()/errno handling.", FSFAT_FOPEN_TEST_08),
+#endif
     Case("FSFAT_FOPEN_TEST_09: ftell() handling.", FSFAT_FOPEN_TEST_09),
     Case("FSFAT_FOPEN_TEST_10: remove() test.", FSFAT_FOPEN_TEST_10),
     Case("FSFAT_FOPEN_TEST_11: rename().", FSFAT_FOPEN_TEST_11),