diff --git a/fuzz/dns_name_fromtext_target.c b/fuzz/dns_name_fromtext_target.c
index e85e61e33a..f412bfd036 100644
--- a/fuzz/dns_name_fromtext_target.c
+++ b/fuzz/dns_name_fromtext_target.c
@@ -20,6 +20,8 @@
 
 #include "fuzz.h"
 
+bool debug = false;
+
 static isc_mem_t *mctx = NULL;
 
 int
diff --git a/fuzz/dns_rdata_fromwire_text.c b/fuzz/dns_rdata_fromwire_text.c
index a71ba5ef37..82941143a6 100644
--- a/fuzz/dns_rdata_fromwire_text.c
+++ b/fuzz/dns_rdata_fromwire_text.c
@@ -28,6 +28,8 @@
 
 #include "fuzz.h"
 
+bool debug = false;
+
 /*
  * Fuzz input to dns_rdata_fromwire(). Then convert the result
  * to text, back to wire format, to multiline text, and back to wire
diff --git a/fuzz/isc_lex_getmastertoken.c b/fuzz/isc_lex_getmastertoken.c
index 2649dd0cfb..64d4727332 100644
--- a/fuzz/isc_lex_getmastertoken.c
+++ b/fuzz/isc_lex_getmastertoken.c
@@ -20,6 +20,8 @@
 
 #include "fuzz.h"
 
+bool debug = false;
+
 int
 LLVMFuzzerInitialize(int *argc __attribute__((unused)),
 		     char ***argv __attribute__((unused)));
diff --git a/fuzz/isc_lex_gettoken.c b/fuzz/isc_lex_gettoken.c
index c87086bb27..2fed94bcf6 100644
--- a/fuzz/isc_lex_gettoken.c
+++ b/fuzz/isc_lex_gettoken.c
@@ -19,6 +19,8 @@
 
 #include "fuzz.h"
 
+bool debug = false;
+
 static isc_mem_t *mctx = NULL;
 static isc_lex_t *lex = NULL;
 
diff --git a/fuzz/main.c b/fuzz/main.c
index 85a9031a0f..d95d6f3fca 100644
--- a/fuzz/main.c
+++ b/fuzz/main.c
@@ -24,8 +24,6 @@
 
 #include <dirent.h>
 
-bool debug = false;
-
 static void
 test_all_from(const char *dirname) {
 	DIR *dirp;