diff --git a/commands.go b/commands.go
index f6f7d7b..dd2d4b5 100644
--- a/commands.go
+++ b/commands.go
@@ -4,8 +4,6 @@ package boba
 
 import (
 	"os"
-	"os/signal"
-	"syscall"
 	"time"
 
 	"golang.org/x/crypto/ssh/terminal"
@@ -62,17 +60,3 @@ func GetTerminalSize(newMsgFunc func(int, int, error) TerminalSizeMsg) Cmd {
 		return newMsgFunc(w, h, err)
 	}
 }
-
-// OnResize is used to listen for window resizes. Use GetTerminalSize to get
-// the windows dimensions. We don't fetch the window size with this command to
-// avoid a potential performance hit making the necessary system calls, since
-// this command could potentially run a lot. On that note, consider debouncing
-// this function.
-func OnResize(newMsgFunc func() Msg) Cmd {
-	return func() Msg {
-		sig := make(chan os.Signal)
-		signal.Notify(sig, syscall.SIGWINCH)
-		<-sig
-		return newMsgFunc()
-	}
-}
diff --git a/commands_unix.go b/commands_unix.go
new file mode 100644
index 0000000..3297461
--- /dev/null
+++ b/commands_unix.go
@@ -0,0 +1,23 @@
+// +build darwin dragonfly freebsd linux netbsd openbsd solaris
+
+package boba
+
+import (
+	"os"
+	"os/signal"
+	"syscall"
+)
+
+// OnResize is used to listen for window resizes. Use GetTerminalSize to get
+// the windows dimensions. We don't fetch the window size with this command to
+// avoid a potential performance hit making the necessary system calls, since
+// this command could potentially run a lot. On that note, consider debouncing
+// this function.
+func OnResize(newMsgFunc func() Msg) Cmd {
+	return func() Msg {
+		sig := make(chan os.Signal)
+		signal.Notify(sig, syscall.SIGWINCH)
+		<-sig
+		return newMsgFunc()
+	}
+}
diff --git a/commands_windows.go b/commands_windows.go
new file mode 100644
index 0000000..b96d7ca
--- /dev/null
+++ b/commands_windows.go
@@ -0,0 +1,9 @@
+// +build windows
+
+package boba
+
+// OnResize is not supported on Windows at this time as Windows does not
+// support the SIGWINCH signal.
+func OnResize(newMsgFunc func() Msg) Cmd {
+	return nil
+}