diff --git a/firmware/src/powhsm/test/btctx/test_btctx.c b/firmware/src/powhsm/test/btctx/test_btctx.c
index 0bea267d..8b372376 100644
--- a/firmware/src/powhsm/test/btctx/test_btctx.c
+++ b/firmware/src/powhsm/test/btctx/test_btctx.c
@@ -54,12 +54,14 @@ int read_hex_file(const char* file_name, unsigned char** buffer, size_t* len) {
         fread(tmp, 2, 1, f);
         read_hex(tmp, 2, *buffer + off);
     }
-    fclose(f);
-
     if (ferror(f)) {
         return -1;
     }
 
+    if (fclose(f)) {
+        return -1;
+    }
+
     return 0;
 }
 
diff --git a/firmware/src/powhsm/test/srlp/test_srlp.c b/firmware/src/powhsm/test/srlp/test_srlp.c
index b05a2b96..dba0d1ee 100644
--- a/firmware/src/powhsm/test/srlp/test_srlp.c
+++ b/firmware/src/powhsm/test/srlp/test_srlp.c
@@ -204,12 +204,15 @@ int read_block_file(const char* file_name, char** buffer, size_t* len) {
 
     *buffer = malloc(*len);
     fread(*buffer, *len, 1, f);
-    fclose(f);
 
     if (ferror(f)) {
         return -1;
     }
 
+    if (fclose(f)) {
+        return -1;
+    }
+
     return 0;
 }