diff --git a/malcolm-iso/config/includes.binary/install/preseed_multipar.cfg b/malcolm-iso/config/includes.binary/install/preseed_multipar.cfg
index 5720a24c0..dc60afd26 100644
--- a/malcolm-iso/config/includes.binary/install/preseed_multipar.cfg
+++ b/malcolm-iso/config/includes.binary/install/preseed_multipar.cfg
@@ -71,7 +71,7 @@ d-i partman-auto/expert_recipe string          \
        filesystem{ ext4 }                      \
        mountpoint{ /boot }                     \
      .                                         \
-     150% 150% 150% linux-swap                 \
+     8192 8241 16384 linux-swap                \
        $defaultignore{ }                       \
        $lvmok{ }                               \
        in_vg { main } lv_name{ swap }          \
diff --git a/malcolm-iso/config/includes.binary/install/preseed_vmware.cfg b/malcolm-iso/config/includes.binary/install/preseed_vmware.cfg
index 87cea5293..28d5c88d0 100644
--- a/malcolm-iso/config/includes.binary/install/preseed_vmware.cfg
+++ b/malcolm-iso/config/includes.binary/install/preseed_vmware.cfg
@@ -71,7 +71,7 @@ d-i partman-auto/expert_recipe string          \
        filesystem{ ext4 }                      \
        mountpoint{ /boot }                     \
      .                                         \
-     150% 150% 150% linux-swap                 \
+     8192 8241 16384 linux-swap                \
        $defaultignore{ }                       \
        $lvmok{ }                               \
        in_vg { main } lv_name{ swap }          \
diff --git a/sensor-iso/config/includes.binary/install/preseed_multipar.cfg b/sensor-iso/config/includes.binary/install/preseed_multipar.cfg
index 821cd8d0f..82bfc1524 100644
--- a/sensor-iso/config/includes.binary/install/preseed_multipar.cfg
+++ b/sensor-iso/config/includes.binary/install/preseed_multipar.cfg
@@ -71,7 +71,7 @@ d-i partman-auto/expert_recipe string          \
        filesystem{ ext4 }                      \
        mountpoint{ /boot }                     \
      .                                         \
-     150% 150% 150% linux-swap                 \
+     8192 8241 16384 linux-swap                \
        $defaultignore{ }                       \
        $lvmok{ }                               \
        in_vg { main } lv_name{ swap }          \
diff --git a/sensor-iso/config/includes.binary/install/preseed_vmware.cfg b/sensor-iso/config/includes.binary/install/preseed_vmware.cfg
index 87cea5293..28d5c88d0 100644
--- a/sensor-iso/config/includes.binary/install/preseed_vmware.cfg
+++ b/sensor-iso/config/includes.binary/install/preseed_vmware.cfg
@@ -71,7 +71,7 @@ d-i partman-auto/expert_recipe string          \
        filesystem{ ext4 }                      \
        mountpoint{ /boot }                     \
      .                                         \
-     150% 150% 150% linux-swap                 \
+     8192 8241 16384 linux-swap                \
        $defaultignore{ }                       \
        $lvmok{ }                               \
        in_vg { main } lv_name{ swap }          \