diff --git a/src/plzma_encoder_impl.cpp b/src/plzma_encoder_impl.cpp
index d255961f..c47268e3 100644
--- a/src/plzma_encoder_impl.cpp
+++ b/src/plzma_encoder_impl.cpp
@@ -56,7 +56,7 @@ namespace plzma {
     }
     
     // IProgress
-    STDMETHODIMP EncoderImpl::SetTotal(UInt64 size) {
+    STDMETHODIMP EncoderImpl::SetTotal(UInt64 size) throw() {
 #if defined(LIBPLZMA_NO_PROGRESS)
         return S_OK;
 #else
@@ -64,7 +64,7 @@ namespace plzma {
 #endif
     }
     
-    STDMETHODIMP EncoderImpl::SetCompleted(const UInt64 *completeValue) {
+    STDMETHODIMP EncoderImpl::SetCompleted(const UInt64 *completeValue) throw() {
 #if defined(LIBPLZMA_NO_PROGRESS)
         return S_OK;
 #else
@@ -73,7 +73,7 @@ namespace plzma {
     }
     
     // IUpdateCallback2
-    STDMETHODIMP EncoderImpl::GetUpdateItemInfo(UInt32 index, Int32 * newData, Int32 * newProperties, UInt32 * indexInArchive) {
+    STDMETHODIMP EncoderImpl::GetUpdateItemInfo(UInt32 index, Int32 * newData, Int32 * newProperties, UInt32 * indexInArchive) throw() {
         try {
             LIBPLZMA_LOCKGUARD(lock, _mutex)
             if (_result != S_OK) {
@@ -102,7 +102,7 @@ namespace plzma {
         return S_OK;
     }
     
-    STDMETHODIMP EncoderImpl::GetProperty(UInt32 index, PROPID propID, PROPVARIANT * value) {
+    STDMETHODIMP EncoderImpl::GetProperty(UInt32 index, PROPID propID, PROPVARIANT * value) throw() {
         try {
             LIBPLZMA_LOCKGUARD(lock, _mutex)
             if (_result != S_OK) {
@@ -154,7 +154,7 @@ namespace plzma {
         return S_OK;
     }
     
-    STDMETHODIMP EncoderImpl::GetStream(UInt32 index, ISequentialInStream ** inStream) {
+    STDMETHODIMP EncoderImpl::GetStream(UInt32 index, ISequentialInStream ** inStream) throw() {
         try {
             LIBPLZMA_LOCKGUARD(lock, _mutex)
             if (_result != S_OK) {
@@ -194,7 +194,7 @@ namespace plzma {
         return S_OK;
     }
     
-    STDMETHODIMP EncoderImpl::SetOperationResult(Int32 operationResult) {
+    STDMETHODIMP EncoderImpl::SetOperationResult(Int32 operationResult) throw() {
         try {
             LIBPLZMA_LOCKGUARD(lock, _mutex)
             if (_result == S_OK) {
@@ -226,16 +226,16 @@ namespace plzma {
         return S_OK;
     }
     
-    STDMETHODIMP EncoderImpl::GetVolumeSize(UInt32 index, UInt64 * size) {
+    STDMETHODIMP EncoderImpl::GetVolumeSize(UInt32 index, UInt64 * size) throw() {
         return S_OK; // unused
     }
     
-    STDMETHODIMP EncoderImpl::GetVolumeStream(UInt32 index, ISequentialOutStream ** volumeStream) {
+    STDMETHODIMP EncoderImpl::GetVolumeStream(UInt32 index, ISequentialOutStream ** volumeStream) throw() {
         return S_OK; // unused
     }
     
     // ICryptoGetTextPassword
-    STDMETHODIMP EncoderImpl::CryptoGetTextPassword(BSTR * password) {
+    STDMETHODIMP EncoderImpl::CryptoGetTextPassword(BSTR * password) throw() {
         if (hasOption(OptionRequirePassword)) {
             return getTextPassword(nullptr, password);
         }
@@ -243,7 +243,7 @@ namespace plzma {
     }
     
     // ICryptoGetTextPassword2
-    STDMETHODIMP EncoderImpl::CryptoGetTextPassword2(Int32 * passwordIsDefined, BSTR * password) {
+    STDMETHODIMP EncoderImpl::CryptoGetTextPassword2(Int32 * passwordIsDefined, BSTR * password) throw() {
         if (hasOption(OptionRequirePassword)) {
             return getTextPassword(passwordIsDefined, password);
         }