diff --git a/internal/site/src/components/containers-table/containers-table-columns.tsx b/internal/site/src/components/containers-table/containers-table-columns.tsx
index 80d70ccb..a356b02c 100644
--- a/internal/site/src/components/containers-table/containers-table-columns.tsx
+++ b/internal/site/src/components/containers-table/containers-table-columns.tsx
@@ -31,7 +31,8 @@ const unitSeconds = [
 // Convert docker status string to number of seconds ("Up X minutes", "Up X hours", etc.)
 function getStatusValue(status: string): number {
 	const [_, num, unit] = status.split(" ")
-	const numValue = Number(num)
+	// Docker uses "a" or "an" instead of "1" for singular units (e.g., "Up a minute", "Up an hour")
+	const numValue = num === "a" || num === "an" ? 1 : Number(num)
 	for (const [unitName, value] of unitSeconds) {
 		if (unit.startsWith(unitName)) {
 			return numValue * value