diff --git a/src/constants.h b/src/constants.h
index 6b35cac..2aa99cb 100644
--- a/src/constants.h
+++ b/src/constants.h
@@ -3,7 +3,7 @@
 #ifndef CONSTANTS_H
 #define CONSTANTS_H
 
-static char *vertex_shader_text =
+static const char *vertex_shader_text =
     "#version 460\n"
     "const mat4 mvp = "
     "{{2.,0.,0.,0.},{0.,2.,0.,0.},{0.,0.,2.,0.},{-1.,-1.,1.,1.}};\n"
@@ -19,4 +19,4 @@ static const Vertex vertices[6] = {{{0.0f, 0.0f}}, {{0.0f, 1.0f}},
                                    {{1.0f, 1.0f}}, {{0.0f, 0.0f}},
                                    {{1.0f, 1.0f}}, {{1.0f, 0.0f}}};
 
-#endif /* CONSTANTS_H */
\ No newline at end of file
+#endif /* CONSTANTS_H */