diff --git a/res/models/material/Centr.mtl b/res/models/material/centr.mtl
similarity index 100%
rename from res/models/material/Centr.mtl
rename to res/models/material/centr.mtl
diff --git a/res/models/material/Consol.mtl b/res/models/material/consol.mtl
similarity index 100%
rename from res/models/material/Consol.mtl
rename to res/models/material/consol.mtl
diff --git a/res/models/material/Kreplenie.mtl b/res/models/material/kreplenie.mtl
similarity index 100%
rename from res/models/material/Kreplenie.mtl
rename to res/models/material/kreplenie.mtl
diff --git a/res/models/material/Opora.mtl b/res/models/material/opora.mtl
similarity index 100%
rename from res/models/material/Opora.mtl
rename to res/models/material/opora.mtl