diff --git a/src/dns_poller.c b/src/dns_poller.c
index 498271b..1b21331 100644
--- a/src/dns_poller.c
+++ b/src/dns_poller.c
@@ -1,4 +1,3 @@
-#include <math.h>        // NOLINT(llvmlibc-restrict-system-libc-headers)
 #include <netdb.h>       // NOLINT(llvmlibc-restrict-system-libc-headers)
 #include <string.h>      // NOLINT(llvmlibc-restrict-system-libc-headers)