diff --git a/src/main/java/InteractiveInterface.java b/src/main/java/InteractiveInterface.java
index 87d1fa1..ef79319 100644
--- a/src/main/java/InteractiveInterface.java
+++ b/src/main/java/InteractiveInterface.java
@@ -275,10 +275,16 @@ public class InteractiveInterface {
                 readDepth = sc.nextInt();
                 System.out.print("\nPlease enter probability of a sequence read error (0.0 to 1.0): ");
                 readErrorRate = sc.nextDouble();
+                if(readErrorRate < 0.0 || readErrorRate > 1.0) {
+                    throw new InputMismatchException("The read error rate must be in the range [0.0, 1.0]");
+                }
                 System.out.println("\nPlease enter the probability of read error collision");
                 System.out.println("(the likelihood that two read errors produce the same spurious sequence)");
                 System.out.print("(0.0 to 1.0): ");
                 errorCollisionRate = sc.nextDouble();
+                if(errorCollisionRate < 0.0 || errorCollisionRate > 1.0) {
+                    throw new InputMismatchException("The error collision rate must be in the range [0.0, 1.0]");
+                }
             }
             System.out.println("\nThe graph and occupancy data will be written to a file.");
             System.out.print("Please enter a name for the output file: ");