diff --git a/tests/testsuite.src/used_binaries.at b/tests/testsuite.src/used_binaries.at
index 7e71e0f76..a4cc5a11c 100644
--- a/tests/testsuite.src/used_binaries.at
+++ b/tests/testsuite.src/used_binaries.at
@@ -1095,7 +1095,7 @@ AT_CLEANUP
 
 
 AT_SETUP([check include header file])
-#AT_KEYWORDS([cobc copy include imp])
+AT_KEYWORDS([cobc copy directive imp])
 
 AT_DATA([filec.h], [
 /* COB_EXT_IMPORT will be defined by libcob.h up-front */
@@ -1171,6 +1171,7 @@ AT_CHECK([$COMPILE_MODULE -Wno-unfinished --copy "f.copy" -fstatic-call prog2.co
   AT_CHECK([$COMPILE_MODULE -Wno-unfinished --copy "f.copy" -fstatic-call -L. -lfilec prog2.cob -o prog2c], [0], ignore, ignore)]
 )
 
+# additional check via directive
 AT_DATA([prog3.cob], [
        >> IMP INCLUDE "file.h"
        IDENTIFICATION   DIVISION.
@@ -1182,6 +1183,12 @@ AT_DATA([prog3.cob], [
            CALL "f" USING "Hello" BY VALUE long RETURNING NOTHING.
 ])
 
+# static build with correct function signature
+AT_CHECK([$COMPILE_MODULE -I . -fstatic-call prog3.cob -o prog3], [0], [], [], [
+  # Previous test "failed" --> retry with import library
+  AT_CHECK([$COMPILE_MODULE -I . -fstatic-call -L. -lfilec prog3.cob -o prog3], [0], ignore, ignore)]
+)
+
 # static build with correct function signature
 # AT_CHECK([$COBC -m -I . -fstatic-call prog3.cob], [0], [], [])