diff --git a/.travis.yml b/.travis.yml
index a3bc34d..c710407 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,8 +14,9 @@ before_script:
   - rustup update
   - rustup component add clippy
   - rustup component add rustfmt
-  - 'echo $PATH'
-  - 'which sh.exe'
+  # CMake doesn't like `sh.exe` being available on Windows,
+  # and since we don't use it elsewhere, just remove from PATH
+  - export PATH="${PATH/:\/bin/}"
 
 script:
   - cargo clippy --all
diff --git a/aeron-driver-sys/build.rs b/aeron-driver-sys/build.rs
index 451b4b2..326dcbd 100644
--- a/aeron-driver-sys/build.rs
+++ b/aeron-driver-sys/build.rs
@@ -99,6 +99,9 @@ pub fn main() {
         .whitelist_type("aeron_.*")
         .whitelist_var("AERON_.*")
         .constified_enum_module("aeron_.*_enum")
+        // Some padding structures use arrays > 120 elements,
+        // so we can't derive Debug implementations
+        .derive_debug(false)
         .generate()
         .expect("Unable to generate aeron_driver bindings");