diff --git a/src/file.c b/src/file.c
index 1aa0d49..02c478c 100644
--- a/src/file.c
+++ b/src/file.c
@@ -123,7 +123,7 @@ void file_write(const char *path, const StringArray *lines) {
   fclose(file_pointer);
 }
 
-void file_free(const File *file) {
+void file_free(File *file) {
   if (!file->error) {
     free(file->content);
   }
diff --git a/src/file.h b/src/file.h
index 1d333ff..c683e68 100644
--- a/src/file.h
+++ b/src/file.h
@@ -13,6 +13,6 @@ void file_write(const char *path, const StringArray *lines);
 
 void file_dump(const char *path, const char *content);
 
-void file_free(const File *file);
+void file_free(File *file);
 
 #endif /* FILE_H */
diff --git a/src/project.c b/src/project.c
index d46e2f9..06e8cba 100644
--- a/src/project.c
+++ b/src/project.c
@@ -134,7 +134,7 @@ void project_reload(Project *project, void (*reload_callback)(unsigned int)) {
   }
 }
 
-void project_free(const Project *project) {
+void project_free(Project *project) {
   for (unsigned int i = 0; i < project->frag_count; i++) {
     file_free(&project->fragment_shaders[i][0]);
   }
diff --git a/src/project.h b/src/project.h
index 1170fef..38ac450 100644
--- a/src/project.h
+++ b/src/project.h
@@ -8,6 +8,6 @@ void project_init(Project *project, const char *project_path,
 
 void project_reload(Project *project, void (*reload_callback)(unsigned int));
 
-void project_free(const Project *project);
+void project_free(Project *project);
 
 #endif /* PROJECT_H */