diff --git a/doc/go1.html b/doc/go1.html
index 9e98a9782f..05d3eb5031 100644
--- a/doc/go1.html
+++ b/doc/go1.html
@@ -1705,7 +1705,7 @@ for full details.
 <tr>
 <td colspan="2"><hr></td>
 </tr>
-<tr><td>Ftoa32(x, f, p)</td> <td>FormatFloat(x, float64(f), p, 32)</td></tr>
+<tr><td>Ftoa32(x, f, p)</td> <td>FormatFloat(float64(x), f, p, 32)</td></tr>
 <tr><td>Ftoa64(x, f, p)</td> <td>FormatFloat(x, f, p, 64)</td></tr>
 <tr><td>FtoaN(x, f, p, n)</td> <td>FormatFloat(x, f, p, n)</td></tr>
 <tr>
diff --git a/doc/go1.tmpl b/doc/go1.tmpl
index 6155fb41cf..7a28be3c3a 100644
--- a/doc/go1.tmpl
+++ b/doc/go1.tmpl
@@ -1590,7 +1590,7 @@ for full details.
 <tr>
 <td colspan="2"><hr></td>
 </tr>
-<tr><td>Ftoa32(x, f, p)</td> <td>FormatFloat(x, float64(f), p, 32)</td></tr>
+<tr><td>Ftoa32(x, f, p)</td> <td>FormatFloat(float64(x), f, p, 32)</td></tr>
 <tr><td>Ftoa64(x, f, p)</td> <td>FormatFloat(x, f, p, 64)</td></tr>
 <tr><td>FtoaN(x, f, p, n)</td> <td>FormatFloat(x, f, p, n)</td></tr>
 <tr>