diff --git a/src/gallium/auxiliary/vl/vl_zscan.h b/src/gallium/auxiliary/vl/vl_zscan.h
index 292152e873e..978503d589f 100644
--- a/src/gallium/auxiliary/vl/vl_zscan.h
+++ b/src/gallium/auxiliary/vl/vl_zscan.h
@@ -31,6 +31,10 @@
 #include "pipe/p_compiler.h"
 #include "pipe/p_state.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /*
  * shader based zscan and quantification
  * expect usage of vl_vertex_buffers as a todo list
@@ -100,4 +104,8 @@ vl_zscan_upload_quant(struct vl_zscan *zscan, struct vl_zscan_buffer *buffer,
 void
 vl_zscan_render(struct vl_zscan *zscan, struct vl_zscan_buffer *buffer, unsigned num_instances);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif