diff --git a/external/tinyfiledialogs/tinyfiledialogs.odin b/external/tinyfiledialogs/tinyfiledialogs.odin
index e6119ac..de03ecb 100644
--- a/external/tinyfiledialogs/tinyfiledialogs.odin
+++ b/external/tinyfiledialogs/tinyfiledialogs.odin
@@ -1,3 +1,4 @@
+#+build !js
 package tinyfiledialogs
 
 import "base:builtin"
diff --git a/src/machine/rom.odin b/src/machine/rom.odin
index dd5f391..f66bc5b 100644
--- a/src/machine/rom.odin
+++ b/src/machine/rom.odin
@@ -1,3 +1,4 @@
+#+build !js
 package machine
 
 import "core:log"
diff --git a/src/simulator/gui_file_loader.odin b/src/simulator/gui_file_loader.odin
index 6457159..3ca825d 100644
--- a/src/simulator/gui_file_loader.odin
+++ b/src/simulator/gui_file_loader.odin
@@ -1,3 +1,4 @@
+#+build !js
 package simulator
 
 import "core:strings"