diff --git a/src/Info.php b/src/Info.php
index 307ad0f..2bf4309 100644
--- a/src/Info.php
+++ b/src/Info.php
@@ -42,7 +42,7 @@ private function loadOutput()
         exec("$cmd $file", $output, $returnVar);
         switch ($returnVar) {
             case 1:
-                throw new OpenPDFException();
+                throw new OpenPDFException("Error opening PDF file: {$file}.");
                 break;
             case 2:
                 throw new OpenOutputException();
diff --git a/src/Text.php b/src/Text.php
index c496be7..3ed8071 100644
--- a/src/Text.php
+++ b/src/Text.php
@@ -27,7 +27,7 @@ public function convert()
 
         switch ($returnVar) {
             case 1:
-                throw new OpenPDFException();
+                throw new OpenPDFException("Error opening PDF file: {$file}.");
                 break;
             case 2:
                 throw new OpenOutputException();