diff --git a/plugins/channelrx/demodapt/aptdemod.h b/plugins/channelrx/demodapt/aptdemod.h
index ce1f8b48c..58ff596e5 100644
--- a/plugins/channelrx/demodapt/aptdemod.h
+++ b/plugins/channelrx/demodapt/aptdemod.h
@@ -81,14 +81,14 @@ public:
         }
 
     private:
-        float m_pixels[APT_PROW_WIDTH];
+        const float *m_pixels;
         int m_zenith;
 
         MsgPixels(const float *pixels, int zenith) :
             Message(),
+            m_pixels(pixels),
             m_zenith(zenith)
         {
-            memcpy(m_pixels, pixels, sizeof(m_pixels));
         }
     };
 
diff --git a/plugins/channelrx/demodapt/aptdemodimageworker.cpp b/plugins/channelrx/demodapt/aptdemodimageworker.cpp
index 267051402..125dcdcb9 100644
--- a/plugins/channelrx/demodapt/aptdemodimageworker.cpp
+++ b/plugins/channelrx/demodapt/aptdemodimageworker.cpp
@@ -105,6 +105,7 @@ bool APTDemodImageWorker::handleMessage(const Message& cmd)
         const APTDemod::MsgPixels& pixelsMsg = (APTDemod::MsgPixels&) cmd;
         const float *pixels = pixelsMsg.getPixels();
         processPixels(pixels);
+        delete[] pixels;
         return true;
     }
     else if (APTDemod::MsgResetDecoder::match(cmd))
diff --git a/plugins/channelrx/demodapt/aptdemodsink.cpp b/plugins/channelrx/demodapt/aptdemodsink.cpp
index f84a5dc0f..5a53eef72 100644
--- a/plugins/channelrx/demodapt/aptdemodsink.cpp
+++ b/plugins/channelrx/demodapt/aptdemodsink.cpp
@@ -122,7 +122,7 @@ void APTDemodSink::feed(const SampleVector::const_iterator& begin, const SampleV
     // 2 lines per second
     if (m_sampleCount >= APTDEMOD_AUDIO_SAMPLE_RATE)
     {
-        float pixels[APT_PROW_WIDTH];
+        float *pixels = new float[APT_PROW_WIDTH];
         apt_getpixelrow(pixels, m_row, &m_zenith, m_row == 0, getsamples, this);
 
         if (getImageWorkerMessageQueue()) {