diff --git a/CHANGELOG.md b/CHANGELOG.md
index 613292439a..28b548c51b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -217,6 +217,7 @@
   enabling it by default for `bindgen-cli` (#2789) .
 - Fix `--allowlist-item` so anonymous enums are no longer ignored.
 - Use clang_getFileLocation instead of clang_getSpellingLocation to fix clang-trunk (#2824)
+- Fix generated constants: `f64::INFINITY`, `f64::NEG_ INFINITY`, `f64::NAN` (#2854).
 
 ## Security
 
diff --git a/bindgen-tests/tests/expectations/tests/infinite-macro.rs b/bindgen-tests/tests/expectations/tests/infinite-macro.rs
index 455a7ae5ed..f19879fb17 100644
--- a/bindgen-tests/tests/expectations/tests/infinite-macro.rs
+++ b/bindgen-tests/tests/expectations/tests/infinite-macro.rs
@@ -1,3 +1,3 @@
 #![allow(dead_code, non_snake_case, non_camel_case_types, non_upper_case_globals)]
-pub const INFINITY: f64 = ::std::f64::INFINITY;
-pub const NAN: f64 = ::std::f64::NAN;
+pub const INFINITY: f64 = f64::INFINITY;
+pub const NAN: f64 = f64::NAN;
diff --git a/bindgen/codegen/helpers.rs b/bindgen/codegen/helpers.rs
index 257ea5965a..4038340100 100644
--- a/bindgen/codegen/helpers.rs
+++ b/bindgen/codegen/helpers.rs
@@ -131,6 +131,7 @@ pub(crate) mod ast_ty {
     use crate::ir::function::FunctionSig;
     use crate::ir::layout::Layout;
     use crate::ir::ty::{FloatKind, IntKind};
+    use crate::RustTarget;
     use proc_macro2::TokenStream;
     use std::str::FromStr;
 
@@ -312,23 +313,45 @@ pub(crate) mod ast_ty {
         }
 
         let prefix = ctx.trait_prefix();
+        let rust_target = ctx.options().rust_target;
 
         if f.is_nan() {
-            return Ok(quote! {
-                ::#prefix::f64::NAN
-            });
+            let tokens = if rust_target >= RustTarget::Stable_1_43 {
+                quote! {
+                    f64::NAN
+                }
+            } else {
+                quote! {
+                    ::#prefix::f64::NAN
+                }
+            };
+            return Ok(tokens);
         }
 
         if f.is_infinite() {
-            return Ok(if f.is_sign_positive() {
-                quote! {
-                    ::#prefix::f64::INFINITY
+            let tokens = if f.is_sign_positive() {
+                if rust_target >= RustTarget::Stable_1_43 {
+                    quote! {
+                        f64::INFINITY
+                    }
+                } else {
+                    quote! {
+                        ::#prefix::f64::INFINITY
+                    }
                 }
             } else {
-                quote! {
-                    ::#prefix::f64::NEG_INFINITY
+                // Negative infinity
+                if rust_target >= RustTarget::Stable_1_43 {
+                    quote! {
+                        f64::NEG_INFINITY
+                    }
+                } else {
+                    quote! {
+                        ::#prefix::f64::NEG_INFINITY
+                    }
                 }
-            });
+            };
+            return Ok(tokens);
         }
 
         warn!("Unknown non-finite float number: {:?}", f);
diff --git a/bindgen/features.rs b/bindgen/features.rs
index c07318c5e2..bd6a25cb84 100644
--- a/bindgen/features.rs
+++ b/bindgen/features.rs
@@ -106,6 +106,7 @@ define_rust_targets! {
     Stable_1_64(64) => { core_ffi_c: #94503 },
     Stable_1_59(59) => { const_cstr: #54745 },
     Stable_1_47(47) => { larger_arrays: #74060 },
+    Stable_1_43(43) => { associated_constants: #68952 },
     Stable_1_40(40) => { non_exhaustive: #44109 },
     Stable_1_36(36) => { maybe_uninit: #60445 },
     Stable_1_33(33) => { repr_packed_n: #57049 },