diff --git a/src/callbacks.c b/src/callbacks.c
index 239b590..3fcf17f 100644
--- a/src/callbacks.c
+++ b/src/callbacks.c
@@ -403,13 +403,13 @@ gboolean on_motion (GtkWidget *win,
               if (devdata->cur_context->arrowsize > 0)
                 {
                   GromitArrowType atype = devdata->cur_context->arrow_type;
-                  gint width = devdata->cur_context->arrowsize * devdata->cur_context->width / 2;
+                  gfloat width = devdata->cur_context->arrowsize * devdata->cur_context->width;
                   gfloat direction =
                       atan2(ev->y - devdata->lasty, ev->x - devdata->lastx);
                   if (atype & GROMIT_ARROW_END)
-                    draw_arrow(data, ev->device, ev->x, ev->y, width * 2, direction);
+                    draw_arrow(data, ev->device, ev->x, ev->y, width, direction);
                   if (atype & GROMIT_ARROW_START)
-                    draw_arrow(data, ev->device, devdata->lastx, devdata->lasty, width * 2, M_PI + direction);
+                    draw_arrow(data, ev->device, devdata->lastx, devdata->lasty, width, M_PI + direction);
                 }
             }
           else if (type == GROMIT_RECT)
diff --git a/src/config.c b/src/config.c
index c441de2..d3aaa49 100644
--- a/src/config.c
+++ b/src/config.c
@@ -163,7 +163,8 @@ gboolean parse_config (GromitData *data)
 
   GromitPaintType type;
   GdkRGBA *fg_color=NULL;
-  guint width, arrowsize, minwidth, maxwidth;
+  guint width, minwidth, maxwidth;
+  gfloat arrowsize;
   guint minlen, maxangle, radius, simplify, snapdist;
   GromitArrowType arrowtype;
 
@@ -373,9 +374,9 @@ gboolean parse_config (GromitData *data)
                         }
                       else if ((intptr_t) scanner->value.v_symbol == SYM_ARROWSIZE)
                         {
-                          gfloat v = parse_get_float(scanner, "Missing arrowsize (float)");
-                          if (isnan(v)) goto cleanup;
-                          arrowsize = (guint)(v + 0.5);
+                          arrowsize = parse_get_float(scanner, "Missing arrowsize (float)");
+                          if (isnan(arrowsize)) goto cleanup;
+                          if (arrowsize < 1) arrowsize = 1;
                           arrowtype = GROMIT_ARROW_END;
                         }
                       else if ((intptr_t) scanner->value.v_symbol == SYM_ARROWTYPE)
diff --git a/src/drawing.c b/src/drawing.c
index 1307322..cdca212 100644
--- a/src/drawing.c
+++ b/src/drawing.c
@@ -41,7 +41,7 @@ void draw_line (GromitData *data,
 void draw_arrow (GromitData *data, 
 		 GdkDevice *dev,
 		 gint x1, gint y1,
-		 gint width,
+		 gfloat width,
 		 gfloat direction)
 {
   GdkRectangle rect;
diff --git a/src/drawing.h b/src/drawing.h
index 2abf151..ebdcabc 100644
--- a/src/drawing.h
+++ b/src/drawing.h
@@ -17,6 +17,6 @@ typedef struct
 
 
 void draw_line (GromitData *data, GdkDevice *dev, gint x1, gint y1, gint x2, gint y2);
-void draw_arrow (GromitData *data, GdkDevice *dev, gint x1, gint y1, gint width, gfloat direction);
+void draw_arrow (GromitData *data, GdkDevice *dev, gint x1, gint y1, gfloat width, gfloat direction);
 
 #endif
diff --git a/src/main.c b/src/main.c
index de8c696..cd2d050 100644
--- a/src/main.c
+++ b/src/main.c
@@ -41,7 +41,7 @@ GromitPaintContext *paint_context_new (GromitData *data,
 				       GromitPaintType type,
 				       GdkRGBA *paint_color,
 				       guint width,
-				       guint arrowsize,
+				       gfloat arrowsize,
                                        GromitArrowType arrowtype,
                                        guint simpilfy,
                                        guint radius,
diff --git a/src/main.h b/src/main.h
index 77ae382..9c5b108 100644
--- a/src/main.h
+++ b/src/main.h
@@ -194,7 +194,7 @@ void clear_screen (GromitData *data);
 
 GromitPaintContext *paint_context_new (GromitData *data, GromitPaintType type,
 				       GdkRGBA *fg_color, guint width,
-                                       guint arrowsize, GromitArrowType arrowtype,
+                                       gfloat arrowsize, GromitArrowType arrowtype,
                                        guint simpilfy, guint radius, guint maxangle, guint minlen, guint snapdist,
                                        guint minwidth, guint maxwidth);
 void paint_context_free (GromitPaintContext *context);