diff --git a/platforms/nexus/sim.mk b/platforms/nexus/sim.mk
index d9ecb7d..4708391 100644
--- a/platforms/nexus/sim.mk
+++ b/platforms/nexus/sim.mk
@@ -72,7 +72,7 @@
 # need for day-to-day work on the software side of Shodan.
 simulate: renode kelvin_sim multihart_boot_rom ext_flash_release kelvin_hello_world cantrip-builtins-release
 	$(RENODE_CMD) -e "\
-    \$$repl_file = @sim/config/platforms/nexus.repl; \
+    \$$repl_file = @sim/config/platforms/nexus-release.repl; \
     \$$tar = @$(EXT_FLASH_RELEASE); \
     \$$cpio = @/dev/null; \
     \$$kernel = @$(CANTRIP_KERNEL_RELEASE); \
@@ -153,7 +153,7 @@
 
 simulate_minisel_release: renode multihart_boot_rom ext_flash_minisel_release
 	$(RENODE_CMD) -e "\
-    \$$repl_file = @sim/config/platforms/nexus.repl; \
+    \$$repl_file = @sim/config/platforms/nexus-release.repl; \
     \$$tar = @$(EXT_FLASH_MINISEL_RELEASE); \
     \$$kernel = @$(CANTRIP_KERNEL_RELEASE); \
     \$$cpio = @/dev/null; \
diff --git a/platforms/shodan/sim.mk b/platforms/shodan/sim.mk
index 304f659..eb84d99 100644
--- a/platforms/shodan/sim.mk
+++ b/platforms/shodan/sim.mk
@@ -72,6 +72,7 @@
 # need for day-to-day work on the software side of Shodan.
 simulate: renode multihart_boot_rom ext_flash_release iree_model_builtins cantrip-builtins-release
 	$(RENODE_CMD) -e "\
+    \$$repl_file = @sim/config/platforms/shodan-release.repl; \
     \$$tar = @$(EXT_FLASH_RELEASE); \
     \$$cpio = @$(EXT_BUILTINS_RELEASE); \
     \$$cpio_load_address = ${CPIO_LOAD_ADDRESS}; \