diff --git a/libraries/libapparmor/include/aalogparse.h b/libraries/libapparmor/include/aalogparse.h
index abbb7b1cb..3c6b0fcac 100644
--- a/libraries/libapparmor/include/aalogparse.h
+++ b/libraries/libapparmor/include/aalogparse.h
@@ -176,7 +176,7 @@ typedef struct
  * @return Parsed data.
  */
 aa_log_record *
-parse_record(char *str);
+parse_record(const char *str);
 
 /**
  * Frees all struct data.
diff --git a/libraries/libapparmor/src/libaalogparse.c b/libraries/libapparmor/src/libaalogparse.c
index 23b2c9cf7..bdacc6a59 100644
--- a/libraries/libapparmor/src/libaalogparse.c
+++ b/libraries/libapparmor/src/libaalogparse.c
@@ -38,7 +38,7 @@
 #include "scanner.h"
 
 /* This is mostly just a wrapper around the code in grammar.y */
-aa_log_record *parse_record(char *str)
+aa_log_record *parse_record(const char *str)
 {
 	YY_BUFFER_STATE lex_buf;
 	yyscan_t scanner;
diff --git a/libraries/libapparmor/src/tst_aalogparse_reentrancy.c b/libraries/libapparmor/src/tst_aalogparse_reentrancy.c
index d11947b6a..43b932adb 100644
--- a/libraries/libapparmor/src/tst_aalogparse_reentrancy.c
+++ b/libraries/libapparmor/src/tst_aalogparse_reentrancy.c
@@ -81,7 +81,7 @@ int aa_log_record_eq(aa_log_record *record1, aa_log_record *record2) {
 }
 
 typedef struct {
-	char* log;
+	const char* log;
 	pthread_barrier_t *barrier;
 } pthread_parse_args;