diff --git a/gtk/Makefile.am b/gtk/Makefile.am
index df7a59360e..f2e9e313a1 100644
--- a/gtk/Makefile.am
+++ b/gtk/Makefile.am
@@ -1,6 +1,6 @@
 bin_PROGRAMS = mobile
 
-include_paths = -I${top_srcdir}/common -I${top_srcdir}/net -I${top_srcdir}/kit -I${top_srcdir}/wsd -I${top_srcdir}
+include_paths = -I${top_srcdir}/common -I${top_srcdir}/net -I${top_srcdir}/kit -I${top_srcdir}/wsd -I${top_srcdir} ${ZSTD_CFLAGS}
 
 warning_flags = -Wall -Werror -Wno-parentheses -Wno-sign-compare -Wno-unused-variable
 define_flags = -DMOBILEAPP=1
@@ -8,6 +8,7 @@ define_flags = -DMOBILEAPP=1
 AM_CPPFLAGS = -pthread \
               -DCOOLWSD_DATADIR='"@COOLWSD_DATADIR@"' \
               -DCOOLWSD_CONFIGDIR='"@COOLWSD_CONFIGDIR@"' \
+	      -DDEBUG_ABSSRCDIR='"'$(realpath ${top_srcdir})'"' \
               -DTOPSRCDIR='"'$(realpath ${top_srcdir})'"' \
               -DGTKAPP \
               ${define_flags} \
@@ -15,10 +16,11 @@ AM_CPPFLAGS = -pthread \
               ${include_paths} \
               ${WEBKIT_CFLAGS}
 
-AM_LDFLAGS = -pthread ${WEBKIT_LIBS} -ldl
+AM_LDFLAGS = -pthread ${WEBKIT_LIBS} -ldl $(ZSTD_LIBS)
 
 common_sources = \
                  ../common/Authorization.cpp \
+                 ../common/ConfigUtil.cpp \
                  ../common/FileUtil.cpp \
                  ../common/Log.cpp \
                  ../common/MessageQueue.cpp \
@@ -27,6 +29,7 @@ common_sources = \
                  ../common/SigUtil.cpp \
                  ../common/SpookyV2.cpp \
                  ../common/StringVector.cpp \
+                 ../common/TraceEvent.cpp \
                  ../common/Unit.cpp \
                  ../common/Util.cpp
 
diff --git a/gtk/README b/gtk/README
index ae95283793..75200bbbc5 100644
--- a/gtk/README
+++ b/gtk/README
@@ -17,5 +17,8 @@ Obviously, adjust the path to your LibreOffice build tree as necessary.
 
 Then make.
 
-You will get the gtk/mobile executable. Run it. Debug it. Fix it.
+You will get the gtk/mobile executable. Run it for example like this:
 
+gtk/mobile file://$PWD/test/data/hello-world.odt
+
+Then, if it doesn't work, debug it and fix it.
diff --git a/gtk/gtk.hpp b/gtk/gtk.hpp
index 1875115aa1..511846ed25 100644
--- a/gtk/gtk.hpp
+++ b/gtk/gtk.hpp
@@ -6,5 +6,6 @@
  */
 
 extern int coolwsd_server_socket_fd;
+extern const char *user_name;
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/gtk/mobile.cpp b/gtk/mobile.cpp
index 1d7a0edf36..38eaae8438 100644
--- a/gtk/mobile.cpp
+++ b/gtk/mobile.cpp
@@ -26,6 +26,10 @@
 #include "Protocol.hpp"
 #include "Util.hpp"
 
+#include "gtk.hpp"
+
+const char *user_name = "Dummy";
+
 const int SHOW_JS_MAXLEN = 70;
 
 int coolwsd_server_socket_fd = -1;
diff --git a/wsd/Storage.cpp b/wsd/Storage.cpp
index 36f5ccd758..df13155380 100644
--- a/wsd/Storage.cpp
+++ b/wsd/Storage.cpp
@@ -59,6 +59,8 @@
 #include <ios.h>
 #elif defined(__ANDROID__)
 #include "androidapp.hpp"
+#elif defined(GTKAPP)
+#include "gtk.hpp"
 #endif
 
 bool StorageBase::FilesystemEnabled;