diff --git a/source/src/rendergl.cpp b/source/src/rendergl.cpp
index b2bf904e..29dce4bd 100644
--- a/source/src/rendergl.cpp
+++ b/source/src/rendergl.cpp
@@ -131,7 +131,7 @@ void quad(GLuint tex, float x, float y, float s, float tx, float ty, float tsx,
     xtraverts += 4;
 }
 
-void quad(GLuint tex, vec &c1, vec &c2, float tx, float ty, float tsx, float tsy)
+void quad(GLuint tex, const vec &c1, const vec &c2, float tx, float ty, float tsx, float tsy)
 {
     if(!tsy) tsy = tsx;
     glBindTexture(GL_TEXTURE_2D, tex);
diff --git a/source/src/sound.cpp b/source/src/sound.cpp
index 9537c437..8d95175e 100644
--- a/source/src/sound.cpp
+++ b/source/src/sound.cpp
@@ -514,4 +514,5 @@ void voicecom(char *sound, char *text)
     }
 }
 
-COMMAND(voicecom, ARG_2STR);
\ No newline at end of file
+COMMAND(voicecom, ARG_2STR);
+