diff --git a/src/detect-flowbits.c b/src/detect-flowbits.c
index fa5a58dc06..6296be32b1 100644
--- a/src/detect-flowbits.c
+++ b/src/detect-flowbits.c
@@ -21,6 +21,7 @@
 #include "flow-bit.h"
 #include "util-var-name.h"
 #include "util-unittest.h"
+#include "util-debug.h"
 
 #define PARSE_REGEX         "([a-z]+)(?:,(.*))?"
 static pcre *parse_regex;
@@ -212,7 +213,9 @@ int DetectFlowbitSetup (DetectEngineCtx *de_ctx, Signature *s, SigMatch *m, char
         cd->idx = 0;
     }
     cd->cmd = fb_cmd;
-    printf("DetectFlowbitSetup: idx %" PRIu32 ", cmd %s, name %s\n", cd->idx, fb_cmd_str, fb_name ? fb_name : "(null)");
+
+    SCLogDebug("idx %" PRIu32 ", cmd %s, name %s",
+        cd->idx, fb_cmd_str, fb_name ? fb_name : "(null)");
 
     /* Okay so far so good, lets get this into a SigMatch
      * and put it in the Signature. */
diff --git a/src/detect-ipproto.c b/src/detect-ipproto.c
index 9948c9091f..31a3756465 100644
--- a/src/detect-ipproto.c
+++ b/src/detect-ipproto.c
@@ -24,6 +24,8 @@
 #include "util-byte.h"
 #include "util-unittest.h"
 
+#include "util-debug.h"
+
 /**
  * \brief Regex for parsing our options
  */
@@ -202,11 +204,13 @@ static int DetectIPProtoSetup(DetectEngineCtx *de_ctx, Signature *s,
             break;
     }
 #if DEBUG
-    printf("op='%c' bits=\"", data->op);
-    for (i = 0; i < (256/8); i++) {
-        printf("%02x", s->proto.proto[i]);
+    if (SCLogDebugEnabled()) {
+        printf("op='%c' bits=\"", data->op);
+        for (i = 0; i < (256/8); i++) {
+            printf("%02x", s->proto.proto[i]);
+        }
+        printf("\"\n");
     }
-    printf("\"\n");
 #endif
 
     ret = 0;