diff --git a/src/makefile.linux-mingw b/src/makefile.linux-mingw
index 8e4e6381..4c155f3f 100644
--- a/src/makefile.linux-mingw
+++ b/src/makefile.linux-mingw
@@ -27,7 +27,7 @@ LIBS= \
  -l ssl \
  -l crypto
 
-DEFS=-D_MT -DWIN32 -D_WINDOWS -DNOPCH -DBOOST_THREAD_USE_LIB
+DEFS=-D_MT -DWIN32 -D_WINDOWS -DBOOST_THREAD_USE_LIB
 DEBUGFLAGS=-g
 CFLAGS=-O2 -w -Wno-invalid-offsetof -Wformat $(DEBUGFLAGS) $(DEFS) $(INCLUDEPATHS)
 
diff --git a/src/makefile.mingw b/src/makefile.mingw
index abcdcce6..917eb12f 100644
--- a/src/makefile.mingw
+++ b/src/makefile.mingw
@@ -23,7 +23,7 @@ LIBS= \
  -l ssl \
  -l crypto
 
-DEFS=-DWIN32 -D_WINDOWS -DNOPCH -DBOOST_THREAD_USE_LIB
+DEFS=-DWIN32 -D_WINDOWS -DBOOST_THREAD_USE_LIB
 DEBUGFLAGS=-g
 CFLAGS=-mthreads -O2 -w -Wno-invalid-offsetof -Wformat $(DEBUGFLAGS) $(DEFS) $(INCLUDEPATHS)
 
diff --git a/src/makefile.unix b/src/makefile.unix
index 146f6b8e..90be3989 100644
--- a/src/makefile.unix
+++ b/src/makefile.unix
@@ -4,7 +4,7 @@
 
 USE_UPNP:=0
 
-DEFS=-DNOPCH
+DEFS=
 
 DEFS += $(addprefix -I,$(CURDIR) $(CURDIR)/obj $(BOOST_INCLUDE_PATH) $(BDB_INCLUDE_PATH) $(OPENSSL_INCLUDE_PATH))
 LIBS = $(addprefix -L,$(BOOST_LIB_PATH) $(BDB_LIB_PATH) $(OPENSSL_LIB_PATH))