diff --git a/polymer/eduke32/source/screentext.h b/polymer/eduke32/source/screentext.h
index 2361a32be..4618f3563 100644
--- a/polymer/eduke32/source/screentext.h
+++ b/polymer/eduke32/source/screentext.h
@@ -22,6 +22,10 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
 #pragma once
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define MAXUSERQUOTES 6
 
 extern int32_t quotebot, quotebotgoal;
@@ -78,3 +82,7 @@ extern vec2_t G_ScreenTextSize(const int32_t font, int32_t x, int32_t y, const i
 extern void G_AddCoordsFromRotation(vec2_t *coords, const vec2_t *unitDirection, const int32_t magnitude);
 extern vec2_t G_ScreenText(const int32_t font, int32_t x, int32_t y, const int32_t z, const int32_t blockangle, const int32_t charangle, const char *str, const int32_t shade, int32_t pal, int32_t o, int32_t alpha, int32_t xspace, int32_t yline, int32_t xbetween, int32_t ybetween, const int32_t f, int32_t x1, int32_t y1, int32_t x2, int32_t y2);
 extern vec2_t G_ScreenTextShadow(int32_t sx, int32_t sy, const int32_t font, int32_t x, int32_t y, const int32_t z, const int32_t blockangle, const int32_t charangle, const char *str, const int32_t shade, int32_t pal, int32_t o, const int32_t alpha, int32_t xspace, int32_t yline, int32_t xbetween, int32_t ybetween, const int32_t f, int32_t x1, int32_t y1, int32_t x2, int32_t y2);
+
+#ifdef __cplusplus
+}
+#endif