diff --git a/binaries/data/mods/public/art/materials/rock_norm_spec.xml b/binaries/data/mods/public/art/materials/rock_norm_spec.xml
index 4df8107813..71a92eb4eb 100644
--- a/binaries/data/mods/public/art/materials/rock_norm_spec.xml
+++ b/binaries/data/mods/public/art/materials/rock_norm_spec.xml
@@ -6,5 +6,5 @@
 	<required_texture name="normTex" define="USE_NORMAL_MAP"/>
 	<required_texture name="specTex" define="USE_SPECULAR_MAP"/>
 	<shader effect="model"/>
-	<uniform name="effectSettings" value="1.5 15.0 0.0075"/>
+	<uniform name="effectSettings" value="1.25 15.0 0.0075"/>
 </material>
diff --git a/binaries/data/mods/public/art/materials/rock_norm_spec_ao.xml b/binaries/data/mods/public/art/materials/rock_norm_spec_ao.xml
index db78425a9a..693cf830a5 100644
--- a/binaries/data/mods/public/art/materials/rock_norm_spec_ao.xml
+++ b/binaries/data/mods/public/art/materials/rock_norm_spec_ao.xml
@@ -7,5 +7,5 @@
 	<required_texture name="normTex" define="USE_NORMAL_MAP"/>
 	<required_texture name="aoTex" define="USE_AO"/>
 	<shader effect="model"/>
-	<uniform name="effectSettings" value="1.5 15.0 0.0075"/>
+	<uniform name="effectSettings" value="1.25 15.0 0.0075"/>
 </material>
diff --git a/binaries/data/mods/public/art/materials/rock_normstrong_spec.xml b/binaries/data/mods/public/art/materials/rock_normstrong_spec.xml
index a7c5132f37..829c7513b6 100644
--- a/binaries/data/mods/public/art/materials/rock_normstrong_spec.xml
+++ b/binaries/data/mods/public/art/materials/rock_normstrong_spec.xml
@@ -6,5 +6,5 @@
 	<required_texture name="normTex" define="USE_NORMAL_MAP"/>
 	<required_texture name="specTex" define="USE_SPECULAR_MAP"/>
 	<shader effect="model"/>
-	<uniform name="effectSettings" value="4.0 4.0 0.0075"/>
+	<uniform name="effectSettings" value="1.65 4.0 0.0075"/>
 </material>
diff --git a/binaries/data/mods/public/art/materials/rock_normstrong_spec_ao.xml b/binaries/data/mods/public/art/materials/rock_normstrong_spec_ao.xml
index 43d8d116a1..74bc28cb9b 100644
--- a/binaries/data/mods/public/art/materials/rock_normstrong_spec_ao.xml
+++ b/binaries/data/mods/public/art/materials/rock_normstrong_spec_ao.xml
@@ -6,5 +6,5 @@
 	<required_texture name="specTex" define="USE_SPECULAR_MAP"/>
 	<required_texture name="aoTex" define="USE_AO"/>
 	<shader effect="model"/>
-	<uniform name="effectSettings" value="4.0 4.0 0.0075"/>
+	<uniform name="effectSettings" value="1.65 4.0 0.0075"/>
 </material>