diff --git a/library/DFHackAPI.cpp b/library/DFHackAPI.cpp
index 455ec024c..3e047d8e9 100644
--- a/library/DFHackAPI.cpp
+++ b/library/DFHackAPI.cpp
@@ -341,7 +341,7 @@ bool DFHackAPIImpl::ReadMetalMatgloss(vector<t_matgloss> & metals)
     int matgloss_address = offset_descriptor->getAddress("matgloss");
     int matgloss_offset = offset_descriptor->getHexValue("matgloss_skip");
     int matgloss_colors = offset_descriptor->getOffset("matgloss_metal_color");
-    DfVector p_matgloss = dm->readVector(matgloss_address + matgloss_offset*2, 4);
+    DfVector p_matgloss = dm->readVector(matgloss_address + matgloss_offset*3, 4);
 
     metals.clear();
 
@@ -367,7 +367,7 @@ bool DFHackAPIImpl::ReadPlantMatgloss(vector<t_matgloss> & plants)
 {
     int matgloss_address = offset_descriptor->getAddress("matgloss");
     int matgloss_offset = offset_descriptor->getHexValue("matgloss_skip");
-    DfVector p_matgloss = dm->readVector(matgloss_address + matgloss_offset*3, 4);
+    DfVector p_matgloss = dm->readVector(matgloss_address + matgloss_offset*2, 4);
 
     plants.clear();
 
diff --git a/tools/CMakeLists.txt b/tools/CMakeLists.txt
index 74a295e33..2972bd828 100644
--- a/tools/CMakeLists.txt
+++ b/tools/CMakeLists.txt
@@ -29,6 +29,11 @@ TARGET_LINK_LIBRARIES(dfcreaturedump dfhack)
 ADD_EXECUTABLE(dfattachtest attachtest.cpp)
 TARGET_LINK_LIBRARIES(dfattachtest dfhack)
 
+# materialtest - just list the first material of each type
+ADD_EXECUTABLE(dfmaterialtest materialtest.cpp)
+TARGET_LINK_LIBRARIES(dfmaterialtest dfhack)
+
+
 IF(UNIX)
-  install(TARGETS dfexpbench dfreveal dfreveal dfprospector dfcleanmap dfcreaturedump dfattachtest RUNTIME DESTINATION bin)
+install(TARGETS dfexpbench dfreveal dfreveal dfprospector dfcleanmap dfcreaturedump dfattachtest dfmaterialtest RUNTIME DESTINATION bin)
 ENDIF(UNIX)
\ No newline at end of file
diff --git a/tools/materialtest.cpp b/tools/materialtest.cpp
new file mode 100644
index 000000000..5b1e52744
--- /dev/null
+++ b/tools/materialtest.cpp
@@ -0,0 +1,46 @@
+// Attach test
+// attachtest - 100x attach/detach, 100x reads, 100x writes
+
+#include <iostream>
+#include <climits>
+#include <integers.h>
+#include <vector>
+#include <ctime>
+using namespace std;
+
+#include <DFTypes.h>
+#include <DFHackAPI.h>
+
+int main (void)
+{
+    DFHackAPI *pDF = CreateDFHackAPI("Memory.xml");
+    DFHackAPI &DF = *pDF;
+    if(!DF.Attach())
+    {
+        cerr << "DF not found" << endl;
+        return 1;
+    }
+    vector <t_matgloss> Plants;
+    DF.ReadPlantMatgloss(Plants);
+    
+    vector <t_matgloss> Metals;
+    DF.ReadMetalMatgloss(Metals);
+    
+    vector <t_matgloss> Stones;
+    DF.ReadStoneMatgloss(Stones);
+    
+    vector <t_matgloss> CreatureTypes;
+    DF.ReadCreatureMatgloss(CreatureTypes);
+    
+    cout << "Plant: " << Plants[0].id << endl;
+    cout << "Metal: " << Metals[0].id << endl;
+    cout << "Stone: " << Stones[0].id << endl;
+    cout << "Creature: " << CreatureTypes[0].id << endl;
+    
+    DF.Detach();
+    delete pDF;
+    
+    cin.ignore();
+    
+    return 0;
+}
\ No newline at end of file