diff --git a/drivers/gles3/shader_compiler_gles3.cpp b/drivers/gles3/shader_compiler_gles3.cpp
index 6cc27bd77a..2372dfb17e 100644
--- a/drivers/gles3/shader_compiler_gles3.cpp
+++ b/drivers/gles3/shader_compiler_gles3.cpp
@@ -133,8 +133,7 @@ static String _interpstr(SL::DataInterpolation p_interp) {
 
 	switch (p_interp) {
 		case SL::INTERPOLATION_FLAT: return "flat ";
-		case SL::INTERPOLATION_NO_PERSPECTIVE: return "noperspective ";
-		case SL::INTERPOLATION_SMOOTH: return "smooth ";
+		case SL::INTERPOLATION_SMOOTH: return "";
 	}
 	return "";
 }
diff --git a/servers/visual/shader_language.cpp b/servers/visual/shader_language.cpp
index 358ed8ca54..50e45963d9 100644
--- a/servers/visual/shader_language.cpp
+++ b/servers/visual/shader_language.cpp
@@ -131,7 +131,6 @@ const char *ShaderLanguage::token_names[TK_MAX] = {
 	"TYPE_USAMPLER3D",
 	"TYPE_SAMPLERCUBE",
 	"INTERPOLATION_FLAT",
-	"INTERPOLATION_NO_PERSPECTIVE",
 	"INTERPOLATION_SMOOTH",
 	"PRECISION_LOW",
 	"PRECISION_MID",
@@ -271,7 +270,6 @@ const ShaderLanguage::KeyWord ShaderLanguage::keyword_list[] = {
 	{ TK_TYPE_USAMPLER3D, "usampler3D" },
 	{ TK_TYPE_SAMPLERCUBE, "samplerCube" },
 	{ TK_INTERPOLATION_FLAT, "flat" },
-	{ TK_INTERPOLATION_NO_PERSPECTIVE, "noperspective" },
 	{ TK_INTERPOLATION_SMOOTH, "smooth" },
 	{ TK_PRECISION_LOW, "lowp" },
 	{ TK_PRECISION_MID, "mediump" },
@@ -759,7 +757,6 @@ bool ShaderLanguage::is_token_interpolation(TokenType p_type) {
 
 	return (
 			p_type == TK_INTERPOLATION_FLAT ||
-			p_type == TK_INTERPOLATION_NO_PERSPECTIVE ||
 			p_type == TK_INTERPOLATION_SMOOTH);
 }
 
@@ -767,8 +764,6 @@ ShaderLanguage::DataInterpolation ShaderLanguage::get_token_interpolation(TokenT
 
 	if (p_type == TK_INTERPOLATION_FLAT)
 		return INTERPOLATION_FLAT;
-	else if (p_type == TK_INTERPOLATION_NO_PERSPECTIVE)
-		return INTERPOLATION_NO_PERSPECTIVE;
 	else
 		return INTERPOLATION_SMOOTH;
 }
diff --git a/servers/visual/shader_language.h b/servers/visual/shader_language.h
index b51106fad7..2d1851928e 100644
--- a/servers/visual/shader_language.h
+++ b/servers/visual/shader_language.h
@@ -80,7 +80,6 @@ public:
 		TK_TYPE_USAMPLER3D,
 		TK_TYPE_SAMPLERCUBE,
 		TK_INTERPOLATION_FLAT,
-		TK_INTERPOLATION_NO_PERSPECTIVE,
 		TK_INTERPOLATION_SMOOTH,
 		TK_PRECISION_LOW,
 		TK_PRECISION_MID,
@@ -210,7 +209,6 @@ public:
 
 	enum DataInterpolation {
 		INTERPOLATION_FLAT,
-		INTERPOLATION_NO_PERSPECTIVE,
 		INTERPOLATION_SMOOTH,
 	};