diff --git a/examples/waver/common.cpp b/examples/waver/common.cpp
index 151dfae..4e45bdd 100644
--- a/examples/waver/common.cpp
+++ b/examples/waver/common.cpp
@@ -625,7 +625,7 @@ void updateCore() {
 
     if (inputCurrent.update) {
         if (inputCurrent.flags.newMessage) {
-            int n = inputCurrent.message.data.size();
+            int n = (int) inputCurrent.message.data.size();
 
             if (directSequenceSpread) {
                 for (int i = 0; i < n; ++i) {
diff --git a/src/ggwave.cpp b/src/ggwave.cpp
index 2c0b629..fa8f6d5 100644
--- a/src/ggwave.cpp
+++ b/src/ggwave.cpp
@@ -460,11 +460,11 @@ GGWave::~GGWave() {
 }
 
 bool GGWave::init(const std::string & text, const int volume) {
-    return init(text.size(), text.data(), getDefaultTxProtocol(), volume);
+    return init((int) text.size(), text.data(), getDefaultTxProtocol(), volume);
 }
 
 bool GGWave::init(const std::string & text, const TxProtocol & txProtocol, const int volume) {
-    return init(text.size(), text.data(), txProtocol, volume);
+    return init((int) text.size(), text.data(), txProtocol, volume);
 }
 
 bool GGWave::init(int dataSize, const char * dataBuffer, const int volume) {