diff --git a/app/src/main/java/de/danoeh/antennapod/fragment/preferences/NetworkPreferencesFragment.java b/app/src/main/java/de/danoeh/antennapod/fragment/preferences/NetworkPreferencesFragment.java
index 440660942..34e8684ed 100644
--- a/app/src/main/java/de/danoeh/antennapod/fragment/preferences/NetworkPreferencesFragment.java
+++ b/app/src/main/java/de/danoeh/antennapod/fragment/preferences/NetworkPreferencesFragment.java
@@ -134,7 +134,8 @@ public class NetworkPreferencesFragment extends PreferenceFragmentCompat {
             builder1.show();
         });
         builder.onNegative((dialog, which) -> {
-            int hourOfDay = 7, minute = 0;
+            int hourOfDay = 7;
+            int minute = 0;
             int[] updateTime = UserPreferences.getUpdateTimeOfDay();
             if (updateTime.length == 2) {
                 hourOfDay = updateTime[0];
diff --git a/config/checkstyle/checkstyle.xml b/config/checkstyle/checkstyle.xml
index bcddda794..22952dcc4 100644
--- a/config/checkstyle/checkstyle.xml
+++ b/config/checkstyle/checkstyle.xml
@@ -32,6 +32,7 @@
                       value="LITERAL_TRY, LITERAL_FINALLY, LITERAL_IF, LITERAL_ELSE, LITERAL_SWITCH"/>
         </module>
         <module name="OneStatementPerLine"/>
+        <module name="MultipleVariableDeclarations"/>
         <module name="FallThrough"/>
         <module name="UpperEll"/>
         <module name="ModifierOrder"/>
diff --git a/core/src/main/java/de/danoeh/antennapod/core/event/DownloaderUpdate.java b/core/src/main/java/de/danoeh/antennapod/core/event/DownloaderUpdate.java
index 9acd7728a..f549940b7 100644
--- a/core/src/main/java/de/danoeh/antennapod/core/event/DownloaderUpdate.java
+++ b/core/src/main/java/de/danoeh/antennapod/core/event/DownloaderUpdate.java
@@ -30,7 +30,8 @@ public class DownloaderUpdate {
 
     DownloaderUpdate(@NonNull List<Downloader> downloaders) {
         this.downloaders = downloaders;
-        LongList feedIds1 = new LongList(), mediaIds1 = new LongList();
+        LongList feedIds1 = new LongList();
+        LongList mediaIds1 = new LongList();
         for(Downloader d1 : downloaders) {
             int type = d1.getDownloadRequest().getFeedfileType();
             long id = d1.getDownloadRequest().getFeedfileId();
diff --git a/core/src/main/java/de/danoeh/antennapod/core/glide/FastBlurTransformation.java b/core/src/main/java/de/danoeh/antennapod/core/glide/FastBlurTransformation.java
index cbd22ceb0..3cc906b7f 100644
--- a/core/src/main/java/de/danoeh/antennapod/core/glide/FastBlurTransformation.java
+++ b/core/src/main/java/de/danoeh/antennapod/core/glide/FastBlurTransformation.java
@@ -83,7 +83,16 @@ public class FastBlurTransformation extends BitmapTransformation {
         int r[] = new int[wh];
         int g[] = new int[wh];
         int b[] = new int[wh];
-        int rsum, gsum, bsum, x, y, i, p, yp, yi, yw;
+        int rsum;
+        int gsum;
+        int bsum;
+        int x;
+        int y;
+        int i;
+        int p;
+        int yp;
+        int yi;
+        int yw;
         int vmin[] = new int[Math.max(w, h)];
 
         int divsum = (div + 1) >> 1;
@@ -101,8 +110,12 @@ public class FastBlurTransformation extends BitmapTransformation {
         int[] sir;
         int rbs;
         int r1 = radius + 1;
-        int routsum, goutsum, boutsum;
-        int rinsum, ginsum, binsum;
+        int routsum;
+        int goutsum;
+        int boutsum;
+        int rinsum;
+        int ginsum;
+        int binsum;
 
         for (y = 0; y < h; y++) {
             rinsum = ginsum = binsum = routsum = goutsum = boutsum = rsum = gsum = bsum = 0;
diff --git a/core/src/main/java/de/danoeh/antennapod/core/util/id3reader/ID3Reader.java b/core/src/main/java/de/danoeh/antennapod/core/util/id3reader/ID3Reader.java
index 7290b9d98..8589e1283 100644
--- a/core/src/main/java/de/danoeh/antennapod/core/util/id3reader/ID3Reader.java
+++ b/core/src/main/java/de/danoeh/antennapod/core/util/id3reader/ID3Reader.java
@@ -206,7 +206,8 @@ public class ID3Reader {
 	private int readUnicodeString(StringBuilder strBuffer, InputStream input, int max, Charset charset)
 			throws IOException, ID3ReaderException {
 		byte[] buffer = new byte[max];
-        int c, cZero = -1;
+        int c;
+        int cZero = -1;
         int i = 0;
         for (; i < max; i++) {
             c = input.read();