diff --git a/ext/gd/libgd/gd_interpolation.c b/ext/gd/libgd/gd_interpolation.c
index 24c7dc5e003..f70169dddcf 100644
--- a/ext/gd/libgd/gd_interpolation.c
+++ b/ext/gd/libgd/gd_interpolation.c
@@ -2178,10 +2178,13 @@ gdImagePtr gdImageRotateInterpolated(const gdImagePtr src, const float angle, in
 
 	/* no interpolation needed here */
 	switch (angle_rounded) {
-		case 9000:
+		case -27000:
+		case   9000:
 			return gdImageRotate90(src, 0);
-		case 18000:
+		case -18000:
+		case  18000:
 			return gdImageRotate180(src, 0);
+		case -9000:
 		case 27000:
 			return gdImageRotate270(src, 0);
 	}
diff --git a/ext/gd/tests/bug66882.phpt b/ext/gd/tests/bug66882.phpt
new file mode 100644
index 00000000000..6dfbdfe06de
--- /dev/null
+++ b/ext/gd/tests/bug66882.phpt
@@ -0,0 +1,14 @@
+--TEST--
+Bug #66882 (imagerotate by -90 degrees truncates image by 1px)
+--SKIPIF--
+<?php
+if (!extension_loaded('gd')) die('skip gd extension not available');
+?>
+--FILE--
+<?php
+$im = imagerotate(imagecreate(10, 10), -90, 0);
+var_dump(imagesy($im), imagesx($im));
+?>
+--EXPECT--
+int(10)
+int(10)