diff --git a/src/makefile.linux-mingw b/src/makefile.linux-mingw
index 9c3c2355..8b3df66d 100644
--- a/src/makefile.linux-mingw
+++ b/src/makefile.linux-mingw
@@ -78,6 +78,8 @@ OBJS= \
 
 all: bitcoind.exe
 
+cryptopp/obj/%.o: cryptopp/%.cpp
+	i586-mingw32msvc-g++ -c $(CFLAGS) -O3 -DCRYPTOPP_DISABLE_ASM -o $@ $<
 
 obj/nogui/%.o: %.cpp $(HEADERS)
 	i586-mingw32msvc-g++ -c $(CFLAGS) -o $@ $<
diff --git a/src/makefile.mingw b/src/makefile.mingw
index 87225761..d1c6ba8b 100644
--- a/src/makefile.mingw
+++ b/src/makefile.mingw
@@ -76,6 +76,8 @@ OBJS= \
 
 all: bitcoind.exe
 
+cryptopp/obj/%.o: cryptopp/%.cpp
+	g++ -c $(CFLAGS) -O3 -DCRYPTOPP_DISABLE_ASM -o $@ $<
 
 obj/nogui/%.o: %.cpp $(HEADERS)
 	g++ -c $(CFLAGS) -o $@ $<
diff --git a/src/makefile.osx b/src/makefile.osx
index aff1e5f3..1d1d6b7b 100644
--- a/src/makefile.osx
+++ b/src/makefile.osx
@@ -76,6 +76,8 @@ endif
 
 all: bitcoind
 
+cryptopp/obj/%.o: cryptopp/%.cpp
+	$(CXX) -c $(CFLAGS) -O3 -DCRYPTOPP_DISABLE_ASM -o $@ $<
 
 obj/nogui/%.o: %.cpp $(HEADERS)
 	$(CXX) -c $(CFLAGS) -o $@ $<
diff --git a/src/makefile.unix b/src/makefile.unix
index 88ca8895..689c54d9 100644
--- a/src/makefile.unix
+++ b/src/makefile.unix
@@ -104,6 +104,9 @@ OBJS= \
 all: bitcoind
 
 
+cryptopp/obj/%.o: cryptopp/%.cpp
+	$(CXX) -c $(CFLAGS) -O3 -o $@ $<
+
 obj/nogui/%.o: %.cpp $(HEADERS)
 	$(CXX) -c $(CXXFLAGS) -o $@ $<