diff --git a/src/muebtransmitter.cc b/src/muebtransmitter.cc
index 3c06a41f8d942765d93d7a858f2d354f7c53f43d..af5682e9f43683c4dfed47aded7c6f4cad34feb5 100644
--- a/src/muebtransmitter.cc
+++ b/src/muebtransmitter.cc
@@ -115,11 +115,11 @@ MuebTransmitter& MuebTransmitter::Instance() {
   return instance;
 }
 
-int32_t MuebTransmitter::width() const {
+std::int32_t MuebTransmitter::width() const {
   return d_ptr_->configuration_.width();
 }
 
-int32_t MuebTransmitter::height() const {
+std::int32_t MuebTransmitter::height() const {
   return d_ptr_->configuration_.height();
 }