diff --git a/src/imageformats/dds.cpp b/src/imageformats/dds.cpp
index 617514c..094cfd9 100644
--- a/src/imageformats/dds.cpp
+++ b/src/imageformats/dds.cpp
@@ -1030,20 +1030,32 @@ static QImage readUnsignedImage(QDataStream &s, const DDSHeader &dds, quint32 wi
 
 static qfloat16 readFloat16(QDataStream &s)
 {
-    qfloat16 f16;
+    qfloat16 f16 = 0;
+    if (s.status() != QDataStream::Ok) {
+        return f16;
+    }
     s >> f16;
+    if (qIsNaN(f16)) {
+        s.setStatus(QDataStream::ReadCorruptData);
+    }
     return f16;
 }
 
 static inline float readFloat32(QDataStream &s)
 {
     Q_ASSERT(sizeof(float) == 4);
-    float value;
+    float value = 0;
+    if (s.status() != QDataStream::Ok) {
+        return value;
+    }
     // TODO: find better way to avoid setting precision each time
     QDataStream::FloatingPointPrecision precision = s.floatingPointPrecision();
     s.setFloatingPointPrecision(QDataStream::SinglePrecision);
     s >> value;
     s.setFloatingPointPrecision(precision);
+    if (qIsNaN(value)) {
+        s.setStatus(QDataStream::ReadCorruptData);
+    }
     return value;
 }
 
@@ -1126,11 +1138,7 @@ static QImage readR32F(QDataStream &s, const quint32 width, const quint32 height
     for (quint32 y = 0; y < height; y++) {
         float *line = reinterpret_cast<float *>(image.scanLine(y));
         for (quint32 x = 0; x < width; x++) {
-            const float f = readFloat32(s);
-            if (std::isnan(f)) {
-                return {};
-            }
-            line[x * 4] = f;
+            line[x * 4] = readFloat32(s);
             line[x * 4 + 1] = 0;
             line[x * 4 + 2] = 0;
             line[x * 4 + 3] = 1;