diff --git a/src/boot/measure.c b/src/boot/measure.c
index a153455904..0fe2e86448 100644
--- a/src/boot/measure.c
+++ b/src/boot/measure.c
@@ -1025,15 +1025,15 @@ static int validate_stub(void) {
                 log_warning("Warning: current kernel image does not support measuring itself, the command line or initrd system extension images.\n"
                             "The PCR measurements seen are unlikely to be valid.");
 
-        r = compare_reported_pcr_nr(TPM_PCR_INDEX_KERNEL_IMAGE, EFI_LOADER_VARIABLE("StubPcrKernelImage"), "kernel image");
+        r = compare_reported_pcr_nr(TPM_PCR_INDEX_KERNEL_IMAGE, EFI_LOADER_VARIABLE(StubPcrKernelImage), "kernel image");
         if (r < 0)
                 return r;
 
-        r = compare_reported_pcr_nr(TPM_PCR_INDEX_KERNEL_PARAMETERS, EFI_LOADER_VARIABLE("StubPcrKernelParameters"), "kernel parameters");
+        r = compare_reported_pcr_nr(TPM_PCR_INDEX_KERNEL_PARAMETERS, EFI_LOADER_VARIABLE(StubPcrKernelParameters), "kernel parameters");
         if (r < 0)
                 return r;
 
-        r = compare_reported_pcr_nr(TPM_PCR_INDEX_INITRD_SYSEXTS, EFI_LOADER_VARIABLE("StubPcrInitRDSysExts"), "initrd system extension images");
+        r = compare_reported_pcr_nr(TPM_PCR_INDEX_INITRD_SYSEXTS, EFI_LOADER_VARIABLE(StubPcrInitRDSysExts), "initrd system extension images");
         if (r < 0)
                 return r;