diff --git a/engines/grim/material.cpp b/engines/grim/material.cpp
index 4dcb31babff..56a159698a7 100644
--- a/engines/grim/material.cpp
+++ b/engines/grim/material.cpp
@@ -26,6 +26,7 @@
 #include "engines/grim/material.h"
 #include "engines/grim/gfx_base.h"
 #include "engines/grim/colormap.h"
+#include "engines/grim/resource.h"
 
 namespace Grim {
 
@@ -95,6 +96,20 @@ Material::Material(const Common::String &filename, const char *data, int len, CM
 	_data = MaterialData::getMaterialData(filename, data, len, cmap);
 }
 
+void Material::reload(CMap *cmap) {
+	Common::String fname = _data->_fname;
+	--_data->_refCount;
+	if (_data->_refCount < 1) {
+		delete _data;
+	}
+
+	Material *m = g_resourceloader->loadMaterial(fname, cmap);
+	// Steal the data from the new material and discard it.
+	_data = m->_data;
+	++_data->_refCount;
+	delete m;
+}
+
 void Material::select() const {
 	if (_data->_width && _data->_height)
 		g_driver->selectMaterial(this);
diff --git a/engines/grim/material.h b/engines/grim/material.h
index d510622bac7..99187e9acbe 100644
--- a/engines/grim/material.h
+++ b/engines/grim/material.h
@@ -50,6 +50,7 @@ public:
 	// Load a texture from the given data.
 	Material(const Common::String &filename, const char *data, int len, CMap *cmap);
 
+	void reload(CMap *cmap);
 	// Load this texture into the GL context
 	void select() const;
 
diff --git a/engines/grim/model.cpp b/engines/grim/model.cpp
index f13d78ee2e0..fd38c2b11c4 100644
--- a/engines/grim/model.cpp
+++ b/engines/grim/model.cpp
@@ -242,13 +242,13 @@ void Model::loadMaterial(int index, CMap *cmap) {
 	}
 	_materials[index] = NULL;
 	if (_parent) {
-		_materials[index] = _parent->findMaterial(_materialNames[index]);
+		_materials[index] = _parent->findMaterial(_materialNames[index], cmap);
 		if (_materials[index]) {
 			_materialsShared[index] = true;
 		}
 	}
 	if (!_materials[index]) {
-		if (mat && cmap == _cmap) {
+		if (mat && cmap->getFilename() == _cmap->getFilename()) {
 			_materials[index] = mat;
 		} else {
 			_materials[index] = g_resourceloader->loadMaterial(_materialNames[index], cmap);
@@ -260,9 +260,11 @@ void Model::loadMaterial(int index, CMap *cmap) {
 	}
 }
 
-Material *Model::findMaterial(const char *name) const {
+Material *Model::findMaterial(const char *name, CMap *cmap) const {
 	for (int i = 0; i < _numMaterials; ++i) {
 		if (scumm_stricmp(name, _materialNames[i]) == 0) {
+			if (cmap->getFilename() != _cmap->getFilename())
+				_materials[i]->reload(cmap);
 			return _materials[i];
 		}
 	}
diff --git a/engines/grim/model.h b/engines/grim/model.h
index c2f094fd29a..2a5c7c5b6ba 100644
--- a/engines/grim/model.h
+++ b/engines/grim/model.h
@@ -55,7 +55,7 @@ public:
 	void loadEMI(Common::MemoryReadStream &ms);
 	void reload(CMap *cmap);
 	void draw() const;
-	Material *findMaterial(const char *name) const;
+	Material *findMaterial(const char *name, CMap *cmap) const;
 
 	~Model();