diff --git a/libafl_targets/build.rs b/libafl_targets/build.rs
index 68384f7686..5d7f66f1f6 100644
--- a/libafl_targets/build.rs
+++ b/libafl_targets/build.rs
@@ -68,9 +68,9 @@ pub const CMPLOG_MAP_H: usize = {};
         }
 
         sancov_cmp
-            .define("CMP_MAP_SIZE", format!("{}", cmp_map_size))
-            .define("CMPLOG_MAP_W", format!("{}", cmplog_map_w))
-            .define("CMPLOG_MAP_H", format!("{}", cmplog_map_h))
+            .define("CMP_MAP_SIZE", Some(&*format!("{}", cmp_map_size)))
+            .define("CMPLOG_MAP_W", Some(&*format!("{}", cmplog_map_w)))
+            .define("CMPLOG_MAP_H", Some(&*format!("{}", cmplog_map_h)))
             .file(_src_dir.join("sancov_cmp.c"))
             .compile("sancov_cmp");
     }
diff --git a/libafl_targets/src/sancov_pcguard.rs b/libafl_targets/src/sancov_pcguard.rs
index 8ff3e6cecc..a616104871 100644
--- a/libafl_targets/src/sancov_pcguard.rs
+++ b/libafl_targets/src/sancov_pcguard.rs
@@ -1,6 +1,6 @@
 //! [`LLVM` `PcGuard`](https://clang.llvm.org/docs/SanitizerCoverage.html#tracing-pcs-with-guards) runtime for `LibAFL`.
 
-use crate::coverage::{EDGES_MAP, EDGES_MAP_SIZE, MAX_EDGES_NUM};
+use crate::coverage::{EDGES_MAP, MAX_EDGES_NUM};
 
 #[cfg(all(feature = "sancov_pcguard_edges", feature = "sancov_pcguard_hitcounts"))]
 #[cfg(not(any(doc, feature = "clippy")))]
@@ -42,7 +42,7 @@ pub unsafe extern "C" fn __sanitizer_cov_trace_pc_guard_init(mut start: *mut u32
     while start < stop {
         MAX_EDGES_NUM = MAX_EDGES_NUM.wrapping_add(1);
         if MAX_EDGES_NUM >= EDGES_MAP.len() {
-            panic!(format!("The number of edges reported by SanitizerCoverage exceed the size of the edges map ({}). Use the LIBAFL_EDGES_MAP_SIZE env to increase it at compile time.", EDGES_MAP.len()));
+            panic!("The number of edges reported by SanitizerCoverage exceed the size of the edges map ({}). Use the LIBAFL_EDGES_MAP_SIZE env to increase it at compile time.", EDGES_MAP.len());
         }
         *start = MAX_EDGES_NUM as u32;
         start = start.offset(1);