diff --git a/include/lib/debugfs.h b/include/lib/debugfs.h
index 9415962..1fdccb6 100644
--- a/include/lib/debugfs.h
+++ b/include/lib/debugfs.h
@@ -66,8 +66,8 @@
  */
 #define DEBUGFS_FID_VALUE	(0x10U)
 
-#define is_debugfs_fid(_fid)	\
-	(((_fid) & FUNCID_NUM_MASK) == DEBUGFS_FID_VALUE)
+#define is_debugfs_fid(_fid) \
+	(GET_SMC_NUM(_fid) == DEBUGFS_FID_VALUE)
 
 
 /* Function ID for accessing the debugfs interface from arm sip.
@@ -76,7 +76,7 @@
 #define DEBUGFS_FID_VALUE_DEPRECATED	(0x30U)
 
 #define is_debugfs_fid_deprecated(_fid)	\
-	(((_fid) & FUNCID_NUM_MASK) == DEBUGFS_FID_VALUE_DEPRECATED)
+	(GET_SMC_NUM(_fid) == DEBUGFS_FID_VALUE_DEPRECATED)
 
 
 /* Error code for debugfs SMC interface failures */
diff --git a/include/lib/pmf/pmf.h b/include/lib/pmf/pmf.h
index 38841d9..41bf7fc 100644
--- a/include/lib/pmf/pmf.h
+++ b/include/lib/pmf/pmf.h
@@ -44,7 +44,7 @@
 
 #define PMF_FID_VALUE_DEPRECATED	U(0x10)
 #define is_pmf_fid_deprecated(_fid) \
-	(((_fid) & FUNCID_NUM_MASK) == PMF_FID_VALUE_DEPRECATED)
+	(GET_SMC_NUM(_fid) == PMF_FID_VALUE_DEPRECATED)
 
 /*
  * Defines for PMF SMC function ids used with Vendor-Specific
@@ -64,7 +64,8 @@
  * PMF calls from the SMC function ID.
  */
 #define PMF_FID_VALUE		U(0x20)
-#define is_pmf_fid(_fid)	(((_fid) & FUNCID_NUM_MASK) == PMF_FID_VALUE)
+#define PMF_ID_MASK		(FUNCID_NUM_MASK & ~(0xf))
+#define is_pmf_fid(_fid)	((GET_SMC_NUM(_fid) & PMF_ID_MASK) == PMF_FID_VALUE)
 
 /* Following are the supported PMF service IDs */
 #define PMF_PSCI_STAT_SVC_ID	0