diff --git a/packages/app-cli/tests/enex_to_md/code5.html b/packages/app-cli/tests/enex_to_md/code5.html
new file mode 100644
index 000000000..3d6d0f5d6
--- /dev/null
+++ b/packages/app-cli/tests/enex_to_md/code5.html
@@ -0,0 +1 @@
+<div><br /></div><div style="--en-codeblock:true;box-sizing: border-box; padding: 8px; font-family: Monaco, Menlo, Consolas, 'Courier New', monospace; font-size: 12px; color: rgb(51, 51, 51); border-top-left-radius: 4px; border-top-right-radius: 4px; border-bottom-right-radius: 4px; border-bottom-left-radius: 4px; background-color: rgb(251, 250, 248); border: 1px solid rgba(0, 0, 0, 0.14902); background-position: initial initial; background-repeat: initial initial;"><div>public class SwapIntegerWithoutTemp {</div><div><br /></div><div>    public void swapAddition() {</div><div>        int a = 3;</div><div>        int b = 5;</div><div><br /></div><div>        a = a + b; // a=8, b=5</div><div>        b = a - b; // a=8, b=3</div><div>        a = a - b; // a=5, b=3</div><div>    }</div><div>}</div></div><div><br /></div>
\ No newline at end of file
diff --git a/packages/app-cli/tests/enex_to_md/code5.md b/packages/app-cli/tests/enex_to_md/code5.md
new file mode 100644
index 000000000..a5dbcb99a
--- /dev/null
+++ b/packages/app-cli/tests/enex_to_md/code5.md
@@ -0,0 +1,13 @@
+```
+public class SwapIntegerWithoutTemp {
+
+    public void swapAddition() {
+        int a = 3;
+        int b = 5;
+
+        a = a + b; // a=8, b=5
+        b = a - b; // a=8, b=3
+        a = a - b; // a=5, b=3
+    }
+}
+```
\ No newline at end of file
diff --git a/packages/lib/import-enex-md-gen.ts b/packages/lib/import-enex-md-gen.ts
index 78d1098b5..49bddf2c6 100644
--- a/packages/lib/import-enex-md-gen.ts
+++ b/packages/lib/import-enex-md-gen.ts
@@ -503,31 +503,15 @@ function isCodeBlock(context: any, nodeName: string, attributes: any) {
 	if (nodeName === 'code') return true;
 
 	if (attributes && attributes.style) {
-		const enCodeBlock = cssValue(context, attributes.style, '-en-codeblock');
+		// Yes, this property sometimes appears as -en-codeblock, sometimes as
+		// --en-codeblock. Would be too easy to import ENEX data otherwise.
+		// https://github.com/laurent22/joplin/issues/4965
+		const enCodeBlock = cssValue(context, attributes.style, '-en-codeblock') || cssValue(context, attributes.style, '--en-codeblock');
 		if (enCodeBlock && enCodeBlock.toLowerCase() === 'true') return true;
 	}
 	return false;
 }
 
-// function removeSectionParent(section:Section | string) {
-// 	if (typeof section === 'string') return section;
-
-// 	section = { ...section };
-// 	delete section.parent;
-
-// 	section.lines = section.lines.slice();
-
-// 	for (let i = 0; i < section.lines.length; i++) {
-// 		section.lines[i] = removeSectionParent(section.lines[i]);
-// 	}
-
-// 	return section;
-// }
-
-// function printSection(section:Section) {
-// 	console.info(JSON.stringify(removeSectionParent(section), null, 4));
-// }
-
 function enexXmlToMdArray(stream: any, resources: ResourceEntity[]): Promise<EnexXmlToMdArrayResult> {
 	const remainingResources = resources.slice();