diff --git a/src/microsoft/compiler/dxil_nir.h b/src/microsoft/compiler/dxil_nir.h
index b94c36ee6c4..6c11d117d78 100644
--- a/src/microsoft/compiler/dxil_nir.h
+++ b/src/microsoft/compiler/dxil_nir.h
@@ -28,6 +28,10 @@
 #include "nir.h"
 #include "nir_builder.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 bool dxil_nir_lower_8bit_conv(nir_shader *shader);
 bool dxil_nir_lower_16bit_conv(nir_shader *shader);
 bool dxil_nir_lower_x2b(nir_shader *shader);
@@ -47,4 +51,8 @@ build_load_ubo_dxil(nir_builder *b, nir_ssa_def *buffer,
                     nir_ssa_def *offset, unsigned num_components,
                     unsigned bit_size);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* DXIL_NIR_H */