diff --git a/scripts/legacy.make b/scripts/legacy.make
index b22b8ef8bf..5726f9e82a 100644
--- a/scripts/legacy.make
+++ b/scripts/legacy.make
@@ -180,6 +180,10 @@ C_SOURCE_FILES = $(wildcard \
 	tf-psa-crypto/drivers/*/*/*.c \
 	tf-psa-crypto/drivers/*/*/*/*.c \
 	tf-psa-crypto/drivers/*/*/*/*/*.c \
+	tf-psa-crypto/dispatch/*.[hc] \
+	tf-psa-crypto/extras/*.[hc] \
+	tf-psa-crypto/platform/*.[hc] \
+	tf-psa-crypto/utilities/*.[hc] \
 	programs/*/*.[hc] \
 	framework/tests/include/*/*.h framework/tests/include/*/*/*.h \
 	framework/tests/src/*.c framework/tests/src/*/*.c \
@@ -200,5 +204,9 @@ cscope.in.out cscope.po.out cscope.out: $(C_SOURCE_FILES)
 	cscope -bq -u -Iinclude -Ilibrary -Itf-psa-crypto/core \
         -Itf-psa-crypto/include \
 	-Itf-psa-crypto/drivers/builtin/src \
+        -Itf-psa-crypto/dispatch \
+        -Itf-psa-crypto/extras \
+        -Itf-psa-crypto/platform \
+        -Itf-psa-crypto/utilities \
 	$(patsubst %,-I%,$(wildcard tf-psa-crypto/drivers/*/include)) -Iframework/tests/include $(C_SOURCE_FILES)
 .PHONY: cscope global