diff --git a/providers/common/capabilities.c b/providers/common/capabilities.c
index a60620d8a2..353da1ee32 100644
--- a/providers/common/capabilities.c
+++ b/providers/common/capabilities.c
@@ -17,6 +17,7 @@
 #include "internal/nelem.h"
 #include "internal/tlsgroups.h"
 #include "prov/providercommon.h"
+#include "e_os.h"
 
 typedef struct tls_group_constants_st {
     unsigned int group_id;   /* Group ID */
@@ -177,7 +178,7 @@ static int tls_group_capability(OSSL_CALLBACK *cb, void *arg)
 int provider_get_capabilities(void *provctx, const char *capability,
                               OSSL_CALLBACK *cb, void *arg)
 {
-    if (strcmp(capability, "TLS-GROUP") == 0)
+    if (strcasecmp(capability, "TLS-GROUP") == 0)
         return tls_group_capability(cb, arg);
 
     /* We don't support this capability */