diff --git a/boards/Kconfig b/boards/Kconfig
index 9268b7c0c9d..45ca2f84d6f 100644
--- a/boards/Kconfig
+++ b/boards/Kconfig
@@ -12,7 +12,7 @@ config BOARD
 	  soc/<arch>/<family>/<series>
 
 config BOARD_REVISION
-	def_string "$BOARD_REVISION"
+	def_string "$(BOARD_REVISION)"
 	help
 	  If the BOARD has a revision field set, this is the revision.
 	  Otherwise, it is the empty string. For example, if BOARD is
diff --git a/share/sysbuild/Kconfig.v2 b/share/sysbuild/Kconfig.v2
index aa3a656e13f..c8261b08616 100644
--- a/share/sysbuild/Kconfig.v2
+++ b/share/sysbuild/Kconfig.v2
@@ -13,7 +13,7 @@ config BOARD
 	  soc/<arch>/<family>/<series>
 
 config BOARD_REVISION
-	def_string "$BOARD_REVISION"
+	def_string "$(BOARD_REVISION)"
 	help
 	  If the BOARD has a revision field set, this is the revision.
 	  Otherwise, it is the empty string. For example, if BOARD is