diff --git a/CMakeLists.txt b/CMakeLists.txt
index bc97de4ee..082dcdb26 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -329,8 +329,8 @@ if ("${BUILD_TYPE_UPPER}" STREQUAL "DEBUG")
 endif()
 
 # check regex compatibility
-check_include_file("regex.h" HAVE_REGEX_H)
-if(HAVE_REGEX_H)
+check_include_file("regex.h" LY_HAVE_REGEX_H)
+if(LY_HAVE_REGEX_H)
     check_symbol_exists(REG_STARTEND "regex.h" HAVE_REG_STARTEND)
 endif()
 
diff --git a/src/ly_common.c b/src/ly_common.c
index c1ad0a588..91a6c4e7a 100644
--- a/src/ly_common.c
+++ b/src/ly_common.c
@@ -16,7 +16,7 @@
 
 #include "ly_common.h"
 
-#ifdef HAVE_REGEX_H
+#ifdef LY_HAVE_REGEX_H
 # include <regex.h>
 #endif
 
@@ -667,7 +667,7 @@ ly_ctx_shared_data_pattern_del(const struct ly_ctx *ctx, const char *pattern, ly
 static LY_ERR
 ly_pat_compile_posix(const char *pattern, void **pat_comp, struct ly_err_item **err)
 {
-#ifdef HAVE_REGEX_H
+#ifdef LY_HAVE_REGEX_H
     LY_ERR rc = LY_SUCCESS;
     int err_code;
     size_t err_len;
@@ -1035,7 +1035,7 @@ ly_pat_compile(const char *pattern, ly_bool format, void **pat_comp, struct ly_e
 static LY_ERR
 ly_pat_match_posix(const void *pat_comp, const char *pattern, const char *str, size_t str_len, struct ly_err_item **err)
 {
-#ifdef HAVE_REGEX_H
+#ifdef LY_HAVE_REGEX_H
     LY_ERR rc = LY_SUCCESS;
     int err_code;
     regex_t *preg_p = (void *)pat_comp;
@@ -1177,7 +1177,7 @@ ly_pat_free(void *pat_comp, ly_bool format)
     }
 
     if (format) {
-#ifdef HAVE_REGEX_H
+#ifdef LY_HAVE_REGEX_H
         regfree(pat_comp);
         free(pat_comp);
 #endif
diff --git a/src/ly_config.h.in b/src/ly_config.h.in
index 5e27103c7..7cce68004 100644
--- a/src/ly_config.h.in
+++ b/src/ly_config.h.in
@@ -85,7 +85,7 @@
 #endif
 
 /** existence of regex.h */
-#cmakedefine HAVE_REGEX_H
+#cmakedefine LY_HAVE_REGEX_H
 
 /** regex.h BSD flag */
 #cmakedefine HAVE_REG_STARTEND
diff --git a/tests/utests/CMakeLists.txt b/tests/utests/CMakeLists.txt
index a82208dca..37ae7296c 100644
--- a/tests/utests/CMakeLists.txt
+++ b/tests/utests/CMakeLists.txt
@@ -77,6 +77,6 @@ ly_add_utest(NAME nacm SOURCES extensions/test_nacm.c)
 ly_add_utest(NAME yangdata SOURCES extensions/test_yangdata.c)
 ly_add_utest(NAME schema_mount SOURCES extensions/test_schema_mount.c)
 ly_add_utest(NAME structure SOURCES extensions/test_structure.c)
-if(HAVE_REGEX_H)
+if(LY_HAVE_REGEX_H)
     ly_add_utest(NAME openconfig SOURCES extensions/test_openconfig.c)
 endif()