diff --git a/ReactNativeClient/lib/joplin-renderer/MdToHtml/rules/mermaid_render.js b/ReactNativeClient/lib/joplin-renderer/MdToHtml/rules/mermaid_render.js
index ed0e77026..bed3f3132 100644
--- a/ReactNativeClient/lib/joplin-renderer/MdToHtml/rules/mermaid_render.js
+++ b/ReactNativeClient/lib/joplin-renderer/MdToHtml/rules/mermaid_render.js
@@ -18,7 +18,7 @@ function mermaidInit() {
 		// Resetting elements size - see mermaid.ts
 		const elements = document.getElementsByClassName('mermaid');
 		for (const element of elements) {
-			element.style.width = 'fit-content';
+			element.style.width = '100%';
 		}
 	}
 }
diff --git a/ReactNativeClient/lib/joplin-renderer/assets/mermaid/mermaid_render.js b/ReactNativeClient/lib/joplin-renderer/assets/mermaid/mermaid_render.js
index 52bc065c0..bed3f3132 100644
--- a/ReactNativeClient/lib/joplin-renderer/assets/mermaid/mermaid_render.js
+++ b/ReactNativeClient/lib/joplin-renderer/assets/mermaid/mermaid_render.js
@@ -15,6 +15,7 @@ function mermaidInit() {
 			console.error('Mermaid error', error);
 		}
 
+		// Resetting elements size - see mermaid.ts
 		const elements = document.getElementsByClassName('mermaid');
 		for (const element of elements) {
 			element.style.width = '100%';