diff --git a/mod/scorm/rd.js b/mod/scorm/rd.js
index 67f7d0165b8..98570e4cb0e 100644
--- a/mod/scorm/rd.js
+++ b/mod/scorm/rd.js
@@ -66,16 +66,24 @@ function scorm_resize (cwidth, cheight) {
     // override total height with configured height if it is defined
     if (cheight > 0) {
       winheight = cheight;
+    }
+    var finalheighttoc = winheight - totalheighttoc;
+    if (finalheighttoc <= 0) {
+        finalheighttoc = winheight;
+    }                        
+    var finalheight = winheight - totalheight;
+    if (finalheight <= 0) {
+        finalheight = winheight;
     }                        
     var toctree = document.getElementById('toctree');
     if (toctree != null){
         var toctreeHeight = toctree.offsetHeight;
-        document.getElementById('toctree').style.height = (winheight - totalheighttoc) + 'px';
+        document.getElementById('toctree').style.height = finalheighttoc + 'px';
         var scoframe2 = document.getElementById('scoframe1');
-        document.getElementById('scormobject').style.height = (winheight - totalheight) + 'px';
+        document.getElementById('scormobject').style.height = finalheight + 'px';
     }else{
         var scoframe2 = document.getElementById('scoframe1');
-        document.getElementById('scormobject').style.height = (winheight - totalheight) + 'px';
+        document.getElementById('scormobject').style.height = finalheight + 'px';
     }
 
 	// resize the content container too to move the footer below the SCORM content
@@ -83,14 +91,14 @@ function scorm_resize (cwidth, cheight) {
 	if (contenti3) {
     	contenti3.style.height = (winheight - totalheight + 30) + 'px';
 	} else {
-	   document.getElementById('content').style.height = (winheight - totalheight + 30) + 'px';
+	   document.getElementById('content').style.height = (finalheight + 30) + 'px';
     }
      // resize the content container too to move the footer below the SCORM content
     var contenti3 = document.getElementById('content-i3');
     if (contenti3) {
-        contenti3.style.height = (winheight - totalheight + 30) + 'px';
+        contenti3.style.height = (finalheight + 30) + 'px';
     } else {
-        document.getElementById('content').style.height = (winheight - totalheight + 30) + 'px';
+        document.getElementById('content').style.height = (finalheight + 30) + 'px';
     }
 }
 -->
\ No newline at end of file