diff --git a/src/analyzers/nyancatanalyzer.cpp b/src/analyzers/nyancatanalyzer.cpp
index 2c018d13a..ac0e26ea5 100644
--- a/src/analyzers/nyancatanalyzer.cpp
+++ b/src/analyzers/nyancatanalyzer.cpp
@@ -40,7 +40,7 @@ NyanCatAnalyzer::NyanCatAnalyzer(QWidget* parent)
       px_per_frame_(0),
       x_offset_(0),
       background_brush_(QColor(0x0f, 0x43, 0x73)) {
-  memset(history_, 0, arraysize(history_) * sizeof(*history_));
+  memset(history_, 0, sizeof(history_));
 
   for (int i = 0; i < kRainbowBands; ++i) {
     colors_[i] = QPen(QColor::fromHsv(i * 255 / kRainbowBands, 255, 255),
diff --git a/src/analyzers/rainbowdashanalyzer.cpp b/src/analyzers/rainbowdashanalyzer.cpp
index 52d90ba0c..0c2d6e415 100644
--- a/src/analyzers/rainbowdashanalyzer.cpp
+++ b/src/analyzers/rainbowdashanalyzer.cpp
@@ -40,7 +40,7 @@ RainbowDashAnalyzer::RainbowDashAnalyzer(QWidget* parent)
       px_per_frame_(0),
       x_offset_(0),
       background_brush_(QColor(0x38, 0x88, 0x00)) {
-  memset(history_, 0, arraysize(history_) * sizeof(*history_));
+  memset(history_, 0, sizeof(history_));
 
   for (int i = 0; i < kRainbowBands; ++i) {
     colors_[i] = QPen(QColor::fromHsv(i * 255 / kRainbowBands, 255, 255),
diff --git a/src/moodbar/moodbarrenderer.cpp b/src/moodbar/moodbarrenderer.cpp
index 55df0faad..9d883ac0a 100644
--- a/src/moodbar/moodbarrenderer.cpp
+++ b/src/moodbar/moodbarrenderer.cpp
@@ -62,7 +62,7 @@ ColorVector MoodbarRenderer::Colors(const QByteArray& data, MoodbarStyle style,
   int hue_distribution[360];
   int total = 0;
 
-  memset(hue_distribution, 0, arraysize(hue_distribution));
+  memset(hue_distribution, 0, sizeof(hue_distribution));
 
   ColorVector colors;