diff --git a/include/llmr/style/style.hpp b/include/llmr/style/style.hpp
index b6056986f..37a50485b 100644
--- a/include/llmr/style/style.hpp
+++ b/include/llmr/style/style.hpp
@@ -8,6 +8,7 @@
 
 #include <cstdint>
 #include <map>
+#include <string>
 #include <unordered_map>
 #include <vector>
 #include <set>
@@ -39,7 +40,6 @@ public:
 
     void setAppliedClasses(const std::vector<std::string> &classes);
     const std::vector<std::string> &getAppliedClasses() const;
-    void setAppliedClasses(std::vector<std::string> &class_names);
     void toggleClass(const std::string &name);
 
     // Updates the styling information to reflect the current array
diff --git a/src/style/style.cpp b/src/style/style.cpp
index 77d69299e..fc2364da8 100644
--- a/src/style/style.cpp
+++ b/src/style/style.cpp
@@ -63,8 +63,8 @@ const std::vector<std::string> &Style::getAppliedClasses() const {
     return appliedClasses;
 }
 
-void Style::setAppliedClasses(std::vector<std::string> &class_names) {
-    appliedClasses.swap(class_names);
+void Style::setAppliedClasses(const std::vector<std::string> &class_names) {
+    appliedClasses = class_names;
     updateClasses();
 }