diff --git a/README.txt b/README.txt
index bc574e4f04..fd05121bb9 100644
--- a/README.txt
+++ b/README.txt
@@ -119,6 +119,7 @@ from your old clunkers.
   May 1st 2014    adapt the Jackpot algorithms to changes made by the
                   coin developers. We keep our unique nVidia advantage
                   because we have a way to break up the divergence.
+                  NOTE: Jackpot Hash now requires Compute 3.0 or later.
 
   April, 27 2014  this release adds Myriad-Groestl and Jackpot Coin.
                   we apply an optimization to Jackpot that turns this
diff --git a/ccminer.vcxproj b/ccminer.vcxproj
index 30bda9c00d..8c58c9ddbc 100644
--- a/ccminer.vcxproj
+++ b/ccminer.vcxproj
@@ -287,11 +287,6 @@ copy "$(CudaToolkitBinDir)\cudart*.dll" "$(OutDir)"</Command>
     <ClInclude Include="sph\sph_simd.h" />
     <ClInclude Include="sph\sph_skein.h" />
     <ClInclude Include="sph\sph_types.h" />
-    <ClInclude Include="sph_blake.h" />
-    <ClInclude Include="sph_fugue.h" />
-    <ClInclude Include="sph_groestl.h" />
-    <ClInclude Include="sph_keccak.h" />
-    <ClInclude Include="sph_types.h" />
     <ClInclude Include="uint256.h" />
   </ItemGroup>
   <ItemGroup>
diff --git a/ccminer.vcxproj.filters b/ccminer.vcxproj.filters
index af1ee62f0d..f9ca3e10fb 100644
--- a/ccminer.vcxproj.filters
+++ b/ccminer.vcxproj.filters
@@ -164,18 +164,6 @@
     <ClInclude Include="cpuminer-config.h">
       <Filter>Header Files</Filter>
     </ClInclude>
-    <ClInclude Include="sph_blake.h">
-      <Filter>Header Files</Filter>
-    </ClInclude>
-    <ClInclude Include="sph_types.h">
-      <Filter>Header Files</Filter>
-    </ClInclude>
-    <ClInclude Include="sph_groestl.h">
-      <Filter>Header Files</Filter>
-    </ClInclude>
-    <ClInclude Include="sph_keccak.h">
-      <Filter>Header Files</Filter>
-    </ClInclude>
     <ClInclude Include="hefty1.h">
       <Filter>Header Files</Filter>
     </ClInclude>
@@ -197,9 +185,6 @@
     <ClInclude Include="cuda_groestl512.h">
       <Filter>Header Files\CUDA</Filter>
     </ClInclude>
-    <ClInclude Include="sph_fugue.h">
-      <Filter>Header Files</Filter>
-    </ClInclude>
     <ClInclude Include="uint256.h">
       <Filter>Header Files</Filter>
     </ClInclude>
diff --git a/cuda_myriadgroestl.cu b/cuda_myriadgroestl.cu
index 8e45688061..18eef89fba 100644
--- a/cuda_myriadgroestl.cu
+++ b/cuda_myriadgroestl.cu
@@ -8,7 +8,7 @@
 #include <memory.h>
 
 // it's unfortunate that this is a compile time constant.
-#define MAXWELL_OR_FERMI 0
+#define MAXWELL_OR_FERMI 1
 
 // aus cpu-miner.c
 extern int device_map[8];
@@ -230,7 +230,7 @@ __device__ void myriadgroestl_gpu_sha256(uint32_t *message)
 #define B32_3(x)    __byte_perm(x, 0, 0x4443)
 //((x) >> 24)
 
-#if MAXWELL_OR_FEMRI
+#if MAXWELL_OR_FERMI
 #define USE_SHARED 1
 // Maxwell and Fermi cards get the best speed with SHARED access it seems.
 #if USE_SHARED
diff --git a/quark/cuda_quark_groestl512.cu b/quark/cuda_quark_groestl512.cu
index 311abc7433..3d71853208 100644
--- a/quark/cuda_quark_groestl512.cu
+++ b/quark/cuda_quark_groestl512.cu
@@ -8,7 +8,7 @@
 #include <memory.h>
 
 // it's unfortunate that this is a compile time constant.
-#define MAXWELL_OR_FERMI 0
+#define MAXWELL_OR_FERMI 1
 
 // aus cpu-miner.c
 extern int device_map[8];
@@ -41,7 +41,7 @@ static cudaDeviceProp props[8];
 #define B32_3(x)    __byte_perm(x, 0, 0x4443)
 //((x) >> 24)
 
-#if MAXWELL_OR_FEMRI
+#if MAXWELL_OR_FERMI
 #define USE_SHARED 1
 // Maxwell and Fermi cards get the best speed with SHARED access it seems.
 #if USE_SHARED