diff --git a/src/compiler/glsl_types.cpp b/src/compiler/glsl_types.c
similarity index 99%
rename from src/compiler/glsl_types.cpp
rename to src/compiler/glsl_types.c
index 50c18a059b0..1adb6e06e3b 100644
--- a/src/compiler/glsl_types.cpp
+++ b/src/compiler/glsl_types.c
@@ -33,8 +33,6 @@
 #include "util/u_string.h"
 #include "util/simple_mtx.h"
 
-extern "C" {
-
 static simple_mtx_t glsl_type_cache_mutex = SIMPLE_MTX_INITIALIZER;
 
 static struct {
@@ -3838,5 +3836,3 @@ glsl_type_get_image_count(const struct glsl_type *type)
 {
    return glsl_type_count(type, GLSL_TYPE_IMAGE);
 }
-
-} /* extern "C" */
diff --git a/src/compiler/meson.build b/src/compiler/meson.build
index 8438702ac7e..d61b8ddf15b 100644
--- a/src/compiler/meson.build
+++ b/src/compiler/meson.build
@@ -51,7 +51,7 @@ float64_glsl_file = files('glsl/float64.glsl')
 astc_decoder_glsl_file = files('glsl/astc_decoder.glsl')
 
 files_libcompiler = files(
-  'glsl_types.cpp',
+  'glsl_types.c',
   'glsl_types.h',
   'glsl_types_impl.h',
   'nir_types.h',