diff --git a/lib/getPostcssResult.js b/lib/getPostcssResult.js
index 143136bb5e..4b00c5aa87 100644
--- a/lib/getPostcssResult.js
+++ b/lib/getPostcssResult.js
@@ -94,10 +94,16 @@ function getCustomSyntax(customSyntax) {
 		try {
 			resolved = require(customSyntax);
 		} catch (error) {
-			// @ts-expect-error -- TS2571: Object is of type 'unknown'.
-			if (error && typeof error === 'object' && error.code === 'MODULE_NOT_FOUND') {
+			if (
+				error &&
+				typeof error === 'object' &&
+				// @ts-expect-error -- TS2571: Object is of type 'unknown'.
+				error.code === 'MODULE_NOT_FOUND' &&
+				// @ts-expect-error -- TS2571: Object is of type 'unknown'.
+				error.message.includes(customSyntax)
+			) {
 				throw new Error(
-					`Cannot resolve custom syntax module "${customSyntax}". Check that module "${customSyntax}" is available and spelled correctly.`,
+					`Cannot resolve custom syntax module "${customSyntax}". Check that module "${customSyntax}" is available and spelled correctly.\n\nCaused by: ${error}`,
 				);
 			}