diff --git a/NCPCore/src/main/java/fr/neatmonster/nocheatplus/checks/moving/SurvivalFly.java b/NCPCore/src/main/java/fr/neatmonster/nocheatplus/checks/moving/SurvivalFly.java
index c4e0d265..a3427d54 100644
--- a/NCPCore/src/main/java/fr/neatmonster/nocheatplus/checks/moving/SurvivalFly.java
+++ b/NCPCore/src/main/java/fr/neatmonster/nocheatplus/checks/moving/SurvivalFly.java
@@ -562,10 +562,10 @@ public class SurvivalFly extends Check {
                     hAllowedDistance *= modSprint;
                 }
             }
-        } else if (!sfDirty && player.isSneaking() && reallySneaking.contains(player.getName()) && (!checkPermissions || !player.hasPermission(Permissions.MOVING_SURVIVALFLY_SNEAKING))) {
+        } else if (!sfDirty && from.isOnGround() && player.isSneaking() && reallySneaking.contains(player.getName()) && (!checkPermissions || !player.hasPermission(Permissions.MOVING_SURVIVALFLY_SNEAKING))) {
             hAllowedDistance = modSneak * walkSpeed * cc.survivalFlySneakingSpeed / 100D;
         }
-        else if (!sfDirty && player.isBlocking() && (!checkPermissions || !player.hasPermission(Permissions.MOVING_SURVIVALFLY_BLOCKING))) {
+        else if (!sfDirty && from.isOnGround() && player.isBlocking() && (!checkPermissions || !player.hasPermission(Permissions.MOVING_SURVIVALFLY_BLOCKING))) {
             hAllowedDistance = modBlock * walkSpeed * cc.survivalFlyBlockingSpeed / 100D;
         }
         else {