diff --git a/inc/qcbor/qcbor_decode.h b/inc/qcbor/qcbor_decode.h
index ecbcb44..484bc21 100644
--- a/inc/qcbor/qcbor_decode.h
+++ b/inc/qcbor/qcbor_decode.h
@@ -1231,7 +1231,7 @@
 
  See also QCBORDecode_GetDoubleConvert() and QCBORDecode_GetDoubleConvertAll().
 */
-static void QCBORDecode_GetDouble(QCBORDecodeContext *pCtx, uint32_t uOptions, double *pValue);
+static void QCBORDecode_GetDouble(QCBORDecodeContext *pCtx, double *pValue);
 
 static void QCBORDecode_GetDoubleInMapN(QCBORDecodeContext *pCtx, int64_t nLabel, double *pdValue);
 
@@ -2189,7 +2189,7 @@
    QCBORDecode_GetDoubleConvertInternalInMapSZ(pMe, szLabel, uOptions, pdValue, &Item);
 }
 
-inline static void QCBORDecode_GetDouble(QCBORDecodeContext *pMe, uint32_t uOptions, double *pValue)
+inline static void QCBORDecode_GetDouble(QCBORDecodeContext *pMe, double *pValue)
 {
     QCBORDecode_GetDoubleConvert(pMe, QCBOR_CONVERT_TYPE_FLOAT, pValue);
 }
diff --git a/test/qcbor_decode_tests.c b/test/qcbor_decode_tests.c
index c74c429..16d2b2e 100644
--- a/test/qcbor_decode_tests.c
+++ b/test/qcbor_decode_tests.c
@@ -3929,7 +3929,8 @@
       if(Item.uLabelType == QCBOR_TYPE_INT64) {
          printf("%lld\n", Item.label.int64);
       } else if(Item.uLabelType == QCBOR_TYPE_TEXT_STRING) {
-         printf("\"%4.4s\"\n", Item.label.string.ptr);
+         // TODO: proper conversion to null-terminated string
+         printf("\"%4.4s\"\n", (const char *)Item.label.string.ptr);
       }
    }
 }
@@ -4958,6 +4959,9 @@
    QCBOREncode_CloseArray(&EC);
 
    uErr = QCBOREncode_Finish(&EC, &Encoded);
+   if(uErr) {
+      Encoded = NULLUsefulBufC;
+   }
 
    return Encoded;
 }