diff --git a/terminus-terminal/src/frontends/xtermFrontend.ts b/terminus-terminal/src/frontends/xtermFrontend.ts
index 05e65071..41c912ae 100644
--- a/terminus-terminal/src/frontends/xtermFrontend.ts
+++ b/terminus-terminal/src/frontends/xtermFrontend.ts
@@ -110,9 +110,9 @@ export class XTermFrontend extends Frontend {
                     let cols = Math.floor(l / actualCellWidth)
                     let rows = Math.floor(i / actualCellHeight)
 
-					if(/[0-9]/gi.test(cols) && /[0-9]/gi.test(rows) ){
-						this.xterm.resize(cols, rows);	
-					}
+                    if (!isNaN(cols) && !isNaN(rows)) {
+                        this.xterm.resize(cols, rows)
+                    }
                 }
             } catch (e) {
                 // tends to throw when element wasn't shown yet