diff --git a/builtin/settingtypes.txt b/builtin/settingtypes.txt
index 55abaf026..17ecf5b34 100644
--- a/builtin/settingtypes.txt
+++ b/builtin/settingtypes.txt
@@ -872,11 +872,6 @@ enable_volumetric_lighting (Volumetric lighting) bool false
 #   Requires: enable_dynamic_shadows
 enable_translucent_foliage (Translucent foliage) bool false
 
-#   Apply specular shading to nodes.
-#
-#   Requires: enable_dynamic_shadows
-enable_node_specular (Node specular) bool false
-
 #   When enabled, liquid reflections are simulated.
 #
 #   Requires: enable_waving_water, enable_dynamic_shadows
diff --git a/src/client/shader.cpp b/src/client/shader.cpp
index e2985e66b..3238969ff 100644
--- a/src/client/shader.cpp
+++ b/src/client/shader.cpp
@@ -214,7 +214,9 @@ public:
 			if (g_settings->getBool("enable_translucent_foliage"))
 				constants["ENABLE_TRANSLUCENT_FOLIAGE"] = 1;
 
-			if (g_settings->getBool("enable_node_specular"))
+			// FIXME: The node specular effect is currently disabled due to mixed in-game
+			// results. This shader should not be applied to all nodes equally. See #15898
+			if (false)
 				constants["ENABLE_NODE_SPECULAR"] = 1;
 
 			s32 shadow_filter = g_settings->getS32("shadow_filters");
diff --git a/src/defaultsettings.cpp b/src/defaultsettings.cpp
index 67b090bc6..916ce9e51 100644
--- a/src/defaultsettings.cpp
+++ b/src/defaultsettings.cpp
@@ -340,7 +340,6 @@ void set_default_settings()
 	settings->setDefault("enable_volumetric_lighting", "false");
 	settings->setDefault("enable_water_reflections", "false");
 	settings->setDefault("enable_translucent_foliage", "false");
-	settings->setDefault("enable_node_specular", "false");
 
 	// Effects Shadows
 	settings->setDefault("enable_dynamic_shadows", "false");