diff --git a/ext/exif/exif.c b/ext/exif/exif.c
index 72ad308d186..09a498a8215 100644
--- a/ext/exif/exif.c
+++ b/ext/exif/exif.c
@@ -3169,7 +3169,7 @@ static int exif_process_IFD_in_MAKERNOTE(image_info_type *ImageInfo, char * valu
 	if (value_len < 2 || maker_note->offset >= value_len - 1) {
 		/* Do not go past the value end */
 		exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "IFD data too short: 0x%04X offset 0x%04X", value_len, maker_note->offset);
-		return FALSE;
+		return TRUE;
 	}
 
 	dir_start = value_ptr + maker_note->offset;
diff --git a/ext/exif/tests/bug77563.phpt b/ext/exif/tests/bug77563.phpt
index 6e427a77ceb..95bbc9d97db 100644
--- a/ext/exif/tests/bug77563.phpt
+++ b/ext/exif/tests/bug77563.phpt
@@ -10,6 +10,8 @@ DONE
 --EXPECTF--
 Warning: exif_thumbnail(bug77563.jpg): IFD data too short: 0x0009 offset 0x0008 in %s%ebug77563.php on line %d
 
+Warning: exif_thumbnail(bug77563.jpg): Illegal IFD offset in %s%ebug77563.php on line %d
+
 Warning: exif_thumbnail(bug77563.jpg): File structure corrupted in %s%ebug77563.php on line %d
 
 Warning: exif_thumbnail(bug77563.jpg): Invalid JPEG file in %s%ebug77563.php on line %d
diff --git a/ext/exif/tests/bug78910.phpt b/ext/exif/tests/bug78910.phpt
index 2f79e8debcf..00085a6b1ed 100644
--- a/ext/exif/tests/bug78910.phpt
+++ b/ext/exif/tests/bug78910.phpt
@@ -13,5 +13,32 @@ Warning: exif_read_data(): Process tag(x927C=MakerNote): Illegal format code 0x2
 
 Warning: exif_read_data(): IFD data too short: 0x0000 offset 0x000C in %s on line %d
 
-Warning: exif_read_data(): Invalid TIFF file in %s on line %d
-bool(false)
+Warning: exif_read_data(): Error in TIFF: filesize(x002A) less than start of IFD dir(x46494C4F) in %s on line %d
+array(8) {
+  ["FileDateTime"]=>
+  int(0)
+  ["FileSize"]=>
+  int(42)
+  ["FileType"]=>
+  int(8)
+  ["MimeType"]=>
+  string(10) "image/tiff"
+  ["SectionsFound"]=>
+  string(13) "ANY_TAG, IFD0"
+  ["COMPUTED"]=>
+  array(2) {
+    ["IsColor"]=>
+    int(0)
+    ["ByteOrderMotorola"]=>
+    int(1)
+  }
+  ["Make"]=>
+  array(2) {
+    [0]=>
+    int(1179994697)
+    [1]=>
+    int(1179208781)
+  }
+  ["MakerNote"]=>
+  NULL
+}