diff --git a/src/callback.c b/src/callback.c
index d61dbb5f..a20e1c82 100644
--- a/src/callback.c
+++ b/src/callback.c
@@ -242,7 +242,7 @@ void backannotate_at_cursor_b_pos(xRect *r, Graph_ctx *gr)
     if(r->flags & 4) { /* private_cursor */
       const char *s = get_tok_value(r->prop_ptr, "cursor2_x", 0);
       if(s[0]) {
-        cursor2 = atof(s);
+        cursor2 = atof_spice(s);
       } else {
         cursor2 = xctx->graph_cursor2_x;
       } 
@@ -462,7 +462,7 @@ static int waves_callback(int event, int mx, int my, KeySym key, int button, int
           if(r->flags & 4) { /* private_cursor */
             const char *s = get_tok_value(r->prop_ptr, "cursor2_x", 0);
             if(s[0]) {
-              cursor2 = atof(s);
+              cursor2 = atof_spice(s);
             } else {
               cursor2 = xctx->graph_cursor2_x;
             }
@@ -484,7 +484,7 @@ static int waves_callback(int event, int mx, int my, KeySym key, int button, int
           if(r->flags & 4) { /* private_cursor */
             const char *s = get_tok_value(r->prop_ptr, "cursor1_x", 0);
             if(s[0]) {
-              cursor1 = atof(s);
+              cursor1 = atof_spice(s);
             } else {
               cursor1 = xctx->graph_cursor1_x;
             }
@@ -515,7 +515,7 @@ static int waves_callback(int event, int mx, int my, KeySym key, int button, int
           if(r->flags & 4) { /* private_cursor */
             const char *s = get_tok_value(r->prop_ptr, "cursor2_x", 0);
             if(s[0]) {
-              cursor2 = atof(s);
+              cursor2 = atof_spice(s);
             } else {
               cursor2 = xctx->graph_cursor2_x;
             }
@@ -599,7 +599,7 @@ static int waves_callback(int event, int mx, int my, KeySym key, int button, int
         if(r->flags & 4) { /* private_cursor */
           const char *s = get_tok_value(r->prop_ptr, "cursor1_x", 0);
           if(s[0]) {
-            cursor1 = atof(s);
+            cursor1 = atof_spice(s);
           } else {
             cursor1 = xctx->graph_cursor1_x;
           }
@@ -610,7 +610,7 @@ static int waves_callback(int event, int mx, int my, KeySym key, int button, int
         if(r->flags & 4) { /* private_cursor */
           const char *s = get_tok_value(r->prop_ptr, "cursor2_x", 0);
           if(s[0]) { 
-            cursor2 = atof(s);
+            cursor2 = atof_spice(s);
           } else { 
             cursor2 = xctx->graph_cursor2_x;
           } 
diff --git a/src/draw.c b/src/draw.c
index 4c6f80cd..047fcdd9 100644
--- a/src/draw.c
+++ b/src/draw.c
@@ -3605,7 +3605,7 @@ void draw_graph(int i, const int flags, Graph_ctx *gr, void *ct)
   if(r->flags & 4) { /* private_cursor */
     const char *s = get_tok_value(r->prop_ptr, "cursor1_x", 0);
     if(s[0]) {
-      cursor1 = atof(s);
+      cursor1 = atof_spice(s);
     } else { 
       cursor1 = xctx->graph_cursor1_x;
     }
@@ -3616,7 +3616,7 @@ void draw_graph(int i, const int flags, Graph_ctx *gr, void *ct)
   if(r->flags & 4) { /* private_cursor */
     const char *s = get_tok_value(r->prop_ptr, "cursor2_x", 0);
     if(s[0]) {
-      cursor2 = atof(s);
+      cursor2 = atof_spice(s);
     } else {
       cursor2 = xctx->graph_cursor2_x;
     }