diff --git a/js/formidable.js b/js/formidable.js
index 2d3f49cb6e..a91863aecb 100644
--- a/js/formidable.js
+++ b/js/formidable.js
@@ -1860,8 +1860,16 @@ function frmCaptcha( captchaSelector ) {
 	const cl       = captchas.length;
 	for ( c = 0; c < cl; c++ ) {
 		const closestForm   = captchas[c].closest( 'form' );
-		const formIsVisible = closestForm && closestForm.offsetParent !== null;
-		if ( ! formIsVisible ) {
+		if ( ! closestForm ) {
+			continue;
+		}
+		let shouldRenderCaptcha;
+		if ( closestForm.closest( '[id^=frm-modal-]' ) ) { // Form is in a modal.
+			shouldRenderCaptcha = true;
+		} else {
+			shouldRenderCaptcha = closestForm.offsetParent !== null; // Form is visible if offsetParent is not null.
+		}
+		if ( ! shouldRenderCaptcha ) {
 			continue;
 		}
 		frmFrontForm.renderCaptcha( captchas[c], captchaSelector );