diff --git a/configure.ac b/configure.ac
index 5c25a604f..1225e71ec 100644
--- a/configure.ac
+++ b/configure.ac
@@ -64,7 +64,7 @@ CLUTTER_MIN_VERSION=1.5.15
 GOBJECT_INTROSPECTION_MIN_VERSION=0.10.1
 GJS_MIN_VERSION=0.7.11
 MUTTER_MIN_VERSION=2.91.4
-GTK_MIN_VERSION=2.99.3
+GTK_MIN_VERSION=3.0.0
 GIO_MIN_VERSION=2.25.9
 LIBECAL_REQUIRED=1.6.0
 LIBEDATASERVER_REQUIRED=1.2.0
diff --git a/src/shell-doc-system.c b/src/shell-doc-system.c
index a80e816d0..78b1637dd 100644
--- a/src/shell-doc-system.c
+++ b/src/shell-doc-system.c
@@ -261,11 +261,7 @@ shell_doc_system_open (ShellDocSystem *system,
   else
     {
       char *app_name;
-#if GTK_MINOR_VERSION >= 18
       const char *app_exec;
-#else
-      char *app_exec;
-#endif
       char *app_exec_quoted;
       guint count;
       time_t time;