diff --git a/amiga/arexx.c b/amiga/arexx.c
index b138d4969..eb2a6c10a 100644
--- a/amiga/arexx.c
+++ b/amiga/arexx.c
@@ -16,6 +16,8 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include "amiga/os3support.h"
+
 #include <stdlib.h>
 #include <string.h>
 #include <math.h>
@@ -32,11 +34,11 @@
 #include "desktop/gui_window.h"
 #include "desktop/version.h"
 
-#include "amiga/os3support.h"
 #include "amiga/arexx.h"
 #include "amiga/download.h"
 #include "amiga/gui.h"
 #include "amiga/hotlist.h"
+#include "amiga/misc.h"
 #include "amiga/theme.h"
 
 extern const char * const verarexx;
diff --git a/amiga/filetype.c b/amiga/filetype.c
index 67b60ab07..b37ebe58d 100644
--- a/amiga/filetype.c
+++ b/amiga/filetype.c
@@ -16,9 +16,12 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include "amiga/os3support.h"
+
 #include <stdlib.h>
 #include <string.h>
 #include "amiga/filetype.h"
+#include "amiga/misc.h"
 #include "amiga/object.h"
 #include "content/fetch.h"
 #include "content/content.h"
@@ -201,7 +204,7 @@ nserror ami_mime_init(const char *mimefile)
 			if(ReadArgs(template, rarray, rargs))
 			{
 				node = AddObject(ami_mime_list, AMINS_MIME);
-				mimeentry = AllocVecTags(sizeof(struct ami_mime_entry), AVT_ClearWithValue, 0, TAG_DONE);
+				mimeentry = ami_misc_allocvec_clear(sizeof(struct ami_mime_entry), 0);
 				node->objstruct = mimeentry;
 
 				if(rarray[AMI_MIME_MIMETYPE])
@@ -351,7 +354,7 @@ static APTR ami_mime_guess_add_datatype(struct DataType *dt, lwc_string **lwc_mi
 	char *p;
 
 	node = AddObject(ami_mime_list, AMINS_MIME);
-	mimeentry = AllocVecTags(sizeof(struct ami_mime_entry), AVT_ClearWithValue, 0, TAG_DONE);
+	mimeentry = ami_misc_allocvec_clear(sizeof(struct ami_mime_entry), 0);
 	node->objstruct = mimeentry;
 
 	lerror = lwc_intern_string(dth->dth_Name, strlen(dth->dth_Name), &mimeentry->datatype);
diff --git a/amiga/font_scan.h b/amiga/font_scan.h
index d29469742..69361557f 100755
--- a/amiga/font_scan.h
+++ b/amiga/font_scan.h
@@ -18,7 +18,7 @@
 
 #ifndef AMIGA_FONT_SCAN_H
 #define AMIGA_FONT_SCAN_H
-
+#include "amiga/os3support.h"
 #include <libwapcaplet/libwapcaplet.h>
 
 void ami_font_scan_init(const char *filename, bool force_scan, bool save,
diff --git a/amiga/os3support.c b/amiga/os3support.c
index e020d0420..613701cc5 100644
--- a/amiga/os3support.c
+++ b/amiga/os3support.c
@@ -160,4 +160,16 @@ char *ASPrintf(const char *fmt, ...)
 	return rbuf;
 }
 
+/* C */
+char *strlwr(char *str)
+{
+  size_t i;
+  size_t len = strlen(str);
+
+  for(i=0; i<len; i++)
+  str[i] = tolower((unsigned char)str[i]);
+
+  return str;
+}
 #endif
+
diff --git a/amiga/os3support.h b/amiga/os3support.h
index 9eb195913..9a25197e9 100644
--- a/amiga/os3support.h
+++ b/amiga/os3support.h
@@ -70,6 +70,9 @@
 #define IDoMethod DoMethod
 #define IDoMethodA DoMethodA
 #define IDoSuperMethodA DoSuperMethodA
+#define RefreshSetGadgetAttrs SetGadgetAttrs /*\todo This isn't quite right */
+/* Utility */
+#define SetMem memset
 
 /* Integral type definitions */
 typedef int8_t int8;
@@ -123,6 +126,9 @@ struct Node *GetHead(struct List *list);
 
 /* Utility */
 char *ASPrintf(const char *fmt, ...);
+
+/* C */
+char *strlwr(char *str);
+#endif
 #endif
 
-#endif