diff --git a/src/port/snprintf.c b/src/port/snprintf.c
index 58300ea..0eb70c2 100644
--- a/src/port/snprintf.c
+++ b/src/port/snprintf.c
@@ -1173,6 +1173,22 @@ fmtfloat(double value, char type, int forcesign, int leftjust,
 		}
 		if (vallen < 0)
 			goto fail;
+
+		/*
+		 * Windows, alone among our supported platforms, likes to emit
+		 * three-digit exponent fields even when two digits would do.  Hack
+		 * such results to look like the way everyone else does it.
+		 */
+#ifdef WIN32
+		if (vallen >= 6 &&
+			convert[vallen - 5] == 'e' &&
+			convert[vallen - 3] == '0')
+		{
+			convert[vallen - 3] = convert[vallen - 2];
+			convert[vallen - 2] = convert[vallen - 1];
+			vallen--;
+		}
+#endif
 	}
 
 	padlen = compute_padlen(minlen, vallen + zeropadlen, leftjust);
@@ -1290,6 +1306,17 @@ pg_strfromd(char *str, size_t count, int precision, double value)
 				target.failed = true;
 				goto fail;
 			}
+
+#ifdef WIN32
+			if (vallen >= 6 &&
+				convert[vallen - 5] == 'e' &&
+				convert[vallen - 3] == '0')
+			{
+				convert[vallen - 3] = convert[vallen - 2];
+				convert[vallen - 2] = convert[vallen - 1];
+				vallen--;
+			}
+#endif
 		}
 	}