diff --git a/tools/bin/td b/tools/bin/td
index a61851a..6df3464 100644
--- a/tools/bin/td
+++ b/tools/bin/td
@@ -27,7 +27,7 @@
 
 : "${CC:=cc}"
 : "${CFLAGS:=-Wall -Wextra -pedantic -std=c89 -O3 $DEFINES $INCLUDES}"
-: "${LDFLAGS:=-pthread -static -flto -fdata-sections -ffunction-sections -s -Wl,-static -Wl,-gc-sections}"
+: "${LDFLAGS:=-lm -pthread -static -flto -fdata-sections -ffunction-sections -s -Wl,-static -Wl,-gc-sections}"
 : "${PROG:=telodendria}"
 
 # If a .env file exists in the current directory, we load it.
@@ -41,7 +41,7 @@ fi
 
 if [ "$DEBUG" = "1" ]; then
 	CFLAGS="$CFLAGS -O0 -g"
-	LDFLAGS="$LDFLAGS -v"
+	LDFLAGS="-lm -pthread -v"
 	PROG="$PROG-debug"
 fi