diff --git a/philosopherstone-qt.pro b/philosopherstone-qt.pro
index abd8bbe..d043440 100644
--- a/philosopherstone-qt.pro
+++ b/philosopherstone-qt.pro
@@ -67,7 +67,7 @@ contains(USE_UPNP, -) {
     count(USE_UPNP, 0) {
         USE_UPNP=1
     }
-    DEFINES += USE_UPNP=$$USE_UPNP STATICLIB
+    DEFINES += USE_UPNP=$$USE_UPNP STATICLIB MINIUPNP_STATICLIB
     INCLUDEPATH += $$MINIUPNPC_INCLUDE_PATH
     LIBS += $$join(MINIUPNPC_LIB_PATH,,-L,) -lminiupnpc
     win32:LIBS += -liphlpapi
diff --git a/src/leveldb/Makefile b/src/leveldb/Makefile
index 9bdc7a6..344ff29 100644
--- a/src/leveldb/Makefile
+++ b/src/leveldb/Makefile
@@ -6,7 +6,7 @@
 # Uncomment exactly one of the lines labelled (A), (B), and (C) below
 # to switch between compilation modes.
 
-OPT ?= -O2 -march=native -pipe -DNDEBUG       # (A) Production use (optimized mode)
+OPT ?= -O2 -DNDEBUG       # (A) Production use (optimized mode)
 # OPT ?= -g2              # (B) Debug mode, w/ full line-level debugging symbols
 # OPT ?= -O2 -g2 -DNDEBUG # (C) Profiling mode: opt, but w/debugging symbols
 #-----------------------------------------------
diff --git a/src/version.cpp b/src/version.cpp
index 75723a5..f163b3f 100644
--- a/src/version.cpp
+++ b/src/version.cpp
@@ -11,7 +11,7 @@
 const std::string CLIENT_NAME("Satoshi");
 
 // Client version number
-#define CLIENT_VERSION_SUFFIX   ""
+#define CLIENT_VERSION_SUFFIX   "b"
 
 
 // The following part of the code determines the CLIENT_BUILD variable.