diff --git a/themes/compact.css b/themes/compact.css
index a9cd433045378a9f33f5c68b224c82b61ebc253b..9e936befa91846091207ca8cad6198126fb95c5d 100644
--- a/themes/compact.css
+++ b/themes/compact.css
@@ -1647,6 +1647,10 @@ body.ttrss_utility.installer,
 body.ttrss_utility.feed_debugger {
   margin: 2em;
 }
+body.ttrss_utility.installer pre,
+body.ttrss_utility.feed_debugger pre {
+  white-space: pre-wrap;
+}
 body.ttrss_utility.share_popup {
   margin: 0;
   padding: 0;
diff --git a/themes/compact_night.css b/themes/compact_night.css
index 69a2d50349ed29492bac7363eb71a74687d70bb5..be0c248f39bf53b0d554c01ac62a556e83b35315 100644
--- a/themes/compact_night.css
+++ b/themes/compact_night.css
@@ -1801,6 +1801,10 @@ body.ttrss_utility.installer,
 body.ttrss_utility.feed_debugger {
   margin: 2em;
 }
+body.ttrss_utility.installer pre,
+body.ttrss_utility.feed_debugger pre {
+  white-space: pre-wrap;
+}
 body.ttrss_utility.share_popup {
   margin: 0;
   padding: 0;
diff --git a/themes/light.css b/themes/light.css
index bd8e9219ecd1e147e5de7244539eadb62719223d..8467c346fab3bf55e6dd7373ae7afb7e38df51b5 100644
--- a/themes/light.css
+++ b/themes/light.css
@@ -1647,6 +1647,10 @@ body.ttrss_utility.installer,
 body.ttrss_utility.feed_debugger {
   margin: 2em;
 }
+body.ttrss_utility.installer pre,
+body.ttrss_utility.feed_debugger pre {
+  white-space: pre-wrap;
+}
 body.ttrss_utility.share_popup {
   margin: 0;
   padding: 0;
diff --git a/themes/light/utility.less b/themes/light/utility.less
index 087c4ced3f5e19a0cfc840f257cd102f6694d3b9..1c30c77ab8177105f6c589af0fe99b64e5c1bf04 100644
--- a/themes/light/utility.less
+++ b/themes/light/utility.less
@@ -101,6 +101,10 @@ body.ttrss_utility.ttrss_login {
 body.ttrss_utility.installer,
 body.ttrss_utility.feed_debugger {
 	margin : 2em;
+
+	pre {
+		white-space : pre-wrap;
+	}
 }
 
 body.ttrss_utility.share_popup {
diff --git a/themes/night.css b/themes/night.css
index e47120d8ff880ad9923f69152e4c69fcde8b39c6..239f3af9c975faa0d6f3badcd95dddc472415bed 100644
--- a/themes/night.css
+++ b/themes/night.css
@@ -1802,6 +1802,10 @@ body.ttrss_utility.installer,
 body.ttrss_utility.feed_debugger {
   margin: 2em;
 }
+body.ttrss_utility.installer pre,
+body.ttrss_utility.feed_debugger pre {
+  white-space: pre-wrap;
+}
 body.ttrss_utility.share_popup {
   margin: 0;
   padding: 0;
diff --git a/themes/night_blue.css b/themes/night_blue.css
index de8acffdff7983b065a26ee4aa4933442917b3ee..5b11648bfc4ce1283faa50cc89a1912e49772c28 100644
--- a/themes/night_blue.css
+++ b/themes/night_blue.css
@@ -1802,6 +1802,10 @@ body.ttrss_utility.installer,
 body.ttrss_utility.feed_debugger {
   margin: 2em;
 }
+body.ttrss_utility.installer pre,
+body.ttrss_utility.feed_debugger pre {
+  white-space: pre-wrap;
+}
 body.ttrss_utility.share_popup {
   margin: 0;
   padding: 0;