diff --git a/include/indicators/terminal_size.hpp b/include/indicators/terminal_size.hpp
index 34f8dff..7b9e408 100644
--- a/include/indicators/terminal_size.hpp
+++ b/include/indicators/terminal_size.hpp
@@ -17,7 +17,7 @@ static inline std::pair<size_t, size_t> terminal_size() {
   return {static_cast<size_t>(rows), static_cast<size_t>(cols)};
 }
 
-size_t terminal_width() { return terminal_size().second; }
+static inline size_t terminal_width() { return terminal_size().second; }
 
 } // namespace indicators
 
diff --git a/single_include/indicators/indicators.hpp b/single_include/indicators/indicators.hpp
index da35855..a9f639a 100644
--- a/single_include/indicators/indicators.hpp
+++ b/single_include/indicators/indicators.hpp
@@ -675,7 +675,7 @@ static inline std::pair<size_t, size_t> terminal_size() {
   return {static_cast<size_t>(rows), static_cast<size_t>(cols)};
 }
 
-size_t terminal_width() { return terminal_size().second; }
+static inline size_t terminal_width() { return terminal_size().second; }
 
 } // namespace indicators