diff --git a/library/compiler-builtins/libm/build.rs b/library/compiler-builtins/libm/build.rs
index 13c3fa1cca03..80145a9ccac9 100644
--- a/library/compiler-builtins/libm/build.rs
+++ b/library/compiler-builtins/libm/build.rs
@@ -18,6 +18,7 @@ fn main() {
 mod musl_reference_tests {
     use rand::seq::SliceRandom;
     use rand::Rng;
+    use std::env;
     use std::fs;
     use std::process::Command;
 
@@ -60,6 +61,12 @@ mod musl_reference_tests {
     }
 
     pub fn generate() {
+        // PowerPC tests are failing on LLVM 13: https://github.com/rust-lang/rust/issues/88520
+        let target_arch = env::var("CARGO_CFG_TARGET_ARCH").unwrap();
+        if target_arch == "powerpc64" {
+            return;
+        }
+
         let files = fs::read_dir("src/math")
             .unwrap()
             .map(|f| f.unwrap().path())
diff --git a/library/compiler-builtins/libm/src/lib.rs b/library/compiler-builtins/libm/src/lib.rs
index bbc79ecad56f..29742b4510c8 100644
--- a/library/compiler-builtins/libm/src/lib.rs
+++ b/library/compiler-builtins/libm/src/lib.rs
@@ -51,5 +51,7 @@ pub fn _eq(a: f64, b: f64) -> Result<(), u64> {
     }
 }
 
+// PowerPC tests are failing on LLVM 13: https://github.com/rust-lang/rust/issues/88520
+#[cfg(not(target_arch = "powerpc64"))]
 #[cfg(all(test, feature = "musl-reference-tests"))]
 include!(concat!(env!("OUT_DIR"), "/musl-tests.rs"));