diff --git a/servers/visual/shader_language.cpp b/servers/visual/shader_language.cpp
index 1f66b0ba9df..209c24c45c0 100644
--- a/servers/visual/shader_language.cpp
+++ b/servers/visual/shader_language.cpp
@@ -124,6 +124,9 @@ const char *ShaderLanguage::token_names[TK_MAX] = {
 	"TYPE_ISAMPLER2D",
 	"TYPE_USAMPLER2D",
 	"TYPE_SAMPLERCUBE",
+	"INTERPOLATION_FLAT",
+	"INTERPOLATION_NO_PERSPECTIVE",
+	"INTERPOLATION_SMOOTH",
 	"PRECISION_LOW",
 	"PRECISION_MID",
 	"PRECISION_HIGH",