diff --git a/modules/juce_audio_formats/format/juce_AudioFormatReader.cpp b/modules/juce_audio_formats/format/juce_AudioFormatReader.cpp
index 3d5e898294..9435e36649 100644
--- a/modules/juce_audio_formats/format/juce_AudioFormatReader.cpp
+++ b/modules/juce_audio_formats/format/juce_AudioFormatReader.cpp
@@ -27,14 +27,8 @@
 namespace juce
 {
 
-AudioFormatReader::AudioFormatReader (InputStream* const in, const String& name)
-    : sampleRate (0),
-      bitsPerSample (0),
-      lengthInSamples (0),
-      numChannels (0),
-      usesFloatingPointData (false),
-      input (in),
-      formatName (name)
+AudioFormatReader::AudioFormatReader (InputStream* in, const String& name)
+    : input (in), formatName (name)
 {
 }
 
diff --git a/modules/juce_audio_formats/format/juce_AudioFormatReader.h b/modules/juce_audio_formats/format/juce_AudioFormatReader.h
index 5486892eea..7ed40c5c8e 100644
--- a/modules/juce_audio_formats/format/juce_AudioFormatReader.h
+++ b/modules/juce_audio_formats/format/juce_AudioFormatReader.h
@@ -196,19 +196,19 @@ public:
 
     //==============================================================================
     /** The sample-rate of the stream. */
-    double sampleRate;
+    double sampleRate = 0;
 
     /** The number of bits per sample, e.g. 16, 24, 32. */
-    unsigned int bitsPerSample;
+    unsigned int bitsPerSample = 0;
 
     /** The total number of samples in the audio stream. */
-    int64 lengthInSamples;
+    int64 lengthInSamples = 0;
 
     /** The total number of channels in the audio stream. */
-    unsigned int numChannels;
+    unsigned int numChannels = 0;
 
     /** Indicates whether the data is floating-point or fixed. */
-    bool usesFloatingPointData;
+    bool usesFloatingPointData = false;
 
     /** A set of metadata values that the reader has pulled out of the stream.