diff --git a/system/libraries/Image_lib.php b/system/libraries/Image_lib.php
index 7ec8ba3..06cdde0 100644
--- a/system/libraries/Image_lib.php
+++ b/system/libraries/Image_lib.php
@@ -886,7 +886,7 @@
 			}
 		}
 
-		$cmd .= escapeshellarg($this->full_src_path).' '.escapeshellarg($this->full_dst_path).' 2>&1';
+		$cmd .= ' '.escapeshellarg($this->full_src_path).' '.escapeshellarg($this->full_dst_path).' 2>&1';
 
 		$retval = 1;
 		// exec() might be disabled
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index e5c5ae0..e318320 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -14,6 +14,7 @@
 -  Fixed a bug (#4890) - :doc:`XML-RPC Library <libraries/xmlrpc>` didn't work on PHP 7.
 -  Fixed a regression (#4887) - :doc:`File Uploading Library <libraries/file_uploading>` triggered fatal errors due to numerous PHP distribution channels (XAMPP and cPanel confirmed) explicitly disabling ext/fileinfo by default.
 -  Fixed a bug (#4679) - :doc:`Input Library <libraries/input>` method ``ip_address()`` didn't properly resolve ``$config['proxy_ips']`` IPv6 addresses.
+-  Fixed a bug (#4902) - :doc:`Image Manipulation Library <libraries/image_lib>` processing via ImageMagick didn't work.
 
 Version 3.1.2
 =============