diff --git a/autotests/read/ani/test_1.ani b/autotests/read/ani/test_1.ani
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index 0000000..2c91aae
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diff --git a/autotests/read/ani/test_1.png b/autotests/read/ani/test_1.png
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index 0000000..78dcfc0
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diff --git a/autotests/read/pic/4x4-alpha.pic b/autotests/read/pic/4x4-alpha.pic
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diff --git a/autotests/read/pic/4x4-alpha.png b/autotests/read/pic/4x4-alpha.png
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diff --git a/autotests/read/pic/4x4-simple-color.pic b/autotests/read/pic/4x4-simple-color.pic
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index 0000000..88b636f
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diff --git a/autotests/read/pic/4x4-simple-color.png b/autotests/read/pic/4x4-simple-color.png
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diff --git a/autotests/read/pic/long-runs.pic b/autotests/read/pic/long-runs.pic
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index 0000000..4a2ffcb
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diff --git a/autotests/read/pic/long-runs.png b/autotests/read/pic/long-runs.png
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diff --git a/src/imageformats/ani.cpp b/src/imageformats/ani.cpp
index 3fa7c83..75e1800 100644
--- a/src/imageformats/ani.cpp
+++ b/src/imageformats/ani.cpp
@@ -521,6 +521,9 @@ bool ANIHandler::canRead(QIODevice *device)
         qWarning("ANIHandler::canRead() called with no device");
         return false;
     }
+    if (device->isSequential()) {
+        return false;
+    }
 
     const QByteArray riffIntro = device->peek(12);