diff --git a/Makefile.in b/Makefile.in
index d376df3..ed1840b 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -6,7 +6,7 @@ CXXFLAGS	:= -DHAVE_LIBSAMPLERATE -DHAVE_FFTW3 -DFFTW_DOUBLE_ONLY -DNO_THREAD_CHE
 CFLAGS		:= @CFLAGS@ $(OPTFLAGS)
 LDFLAGS		:= @LDFLAGS@ -lpthread $(LDFLAGS)
 
-JNI_CXXFLAGS	:= -I$(JAVA_HOME)/include
+JNI_CXXFLAGS	:= -I$(JAVA_HOME)/include -I$(JAVA_HOME)/include/linux
 JAVAC		:= $(JAVA_HOME)/bin/javac
 JAR		:= $(JAVA_HOME)/bin/jar
 
@@ -183,7 +183,7 @@ install:	all
 	cp $(DYNAMIC_TARGET) $(DESTDIR)$(INSTALL_LIBDIR)/$(LIBNAME)$(DYNAMIC_EXTENSION).$(DYNAMIC_FULL_VERSION)
 	ln -s $(LIBNAME)$(DYNAMIC_EXTENSION).$(DYNAMIC_FULL_VERSION) $(DESTDIR)$(INSTALL_LIBDIR)/$(LIBNAME)$(DYNAMIC_EXTENSION).$(DYNAMIC_ABI_VERSION)
 	ln -s $(LIBNAME)$(DYNAMIC_EXTENSION).$(DYNAMIC_FULL_VERSION) $(DESTDIR)$(INSTALL_LIBDIR)/$(LIBNAME)$(DYNAMIC_EXTENSION)
-	cp $(JNI_TARGET) $(DESTDIR)$(INSTALL_LIBDIR)/$(JNINAME)$(DYNAMIC_EXTENSION)
+	cp -f $(JNI_TARGET) $(DESTDIR)$(INSTALL_LIBDIR)/$(JNINAME)$(DYNAMIC_EXTENSION)
 	cp $(VAMP_TARGET) $(DESTDIR)$(INSTALL_VAMPDIR)
 	cp vamp/vamp-rubberband.cat $(DESTDIR)$(INSTALL_VAMPDIR)
 	cp $(LADSPA_TARGET) $(DESTDIR)$(INSTALL_LADSPADIR)