diff --git a/src/libpfm4/lib/pfmlib_amd64_perf_event.c b/src/libpfm4/lib/pfmlib_amd64_perf_event.c
index 0773408f6..c9955835c 100644
--- a/src/libpfm4/lib/pfmlib_amd64_perf_event.c
+++ b/src/libpfm4/lib/pfmlib_amd64_perf_event.c
@@ -75,7 +75,7 @@ pfm_amd64_get_perf_encoding(void *this, pfmlib_event_desc_t *e)
 		return ret;
 
 	if (e->count > 1) {
-		DPRINT("%s: unsupported count=%d\n", e->count);
+		DPRINT("unsupported count=%d\n", e->count);
 		return PFM_ERR_NOTSUPP;
 	}
 
diff --git a/src/libpfm4/lib/pfmlib_common.c b/src/libpfm4/lib/pfmlib_common.c
index d1b67bc06..f28175ae8 100644
--- a/src/libpfm4/lib/pfmlib_common.c
+++ b/src/libpfm4/lib/pfmlib_common.c
@@ -1191,7 +1191,7 @@ pfmlib_init_pmus(void)
 			continue;
 
 		if (pfmlib_is_blacklisted_pmu(p)) {
-			DPRINT("%d PMU blacklisted, skipping initialization\n");
+			DPRINT("%s PMU blacklisted, skipping initialization\n", p->name);
 			continue;
 		}
 		p->flags |= PFMLIB_PMU_FL_INIT;
@@ -1429,7 +1429,7 @@ pfmlib_parse_event_attr(char *str, pfmlib_event_desc_t *d)
 			ainfo->idx  = strtoull(s, &endptr, 0);
 			ainfo->equiv= NULL;
 			if (*endptr) {
-				DPRINT("raw umask (%s) is not a number\n");
+				DPRINT("raw umask (%s) is not a number\n", str);
 				return PFM_ERR_ATTR;
 			}
 
diff --git a/src/libpfm4/lib/pfmlib_intel_skx_unc_cha.c b/src/libpfm4/lib/pfmlib_intel_skx_unc_cha.c
index c5f8141ed..1508008cd 100644
--- a/src/libpfm4/lib/pfmlib_intel_skx_unc_cha.c
+++ b/src/libpfm4/lib/pfmlib_intel_skx_unc_cha.c
@@ -57,8 +57,7 @@ display_cha(void *this, pfmlib_event_desc_t *e, void *val)
 
 	f.val = e->codes[1];
 
-	__pfm_vbprintf("[UNC_CHA_FILTER0=0x%"PRIx64" thread_id=%d source=0x%x state=0x%x"
-		       " state=0x%x]\n",
+	__pfm_vbprintf("[UNC_CHA_FILTER0=0x%"PRIx64" thread_id=%d source=0x%x state=0x%x]\n",
 			f.val,
 			f.skx_cha_filt0.tid,
 			f.skx_cha_filt0.sid,
diff --git a/src/libpfm4/lib/pfmlib_intel_x86.c b/src/libpfm4/lib/pfmlib_intel_x86.c
index 1eac435b3..b876486e3 100644
--- a/src/libpfm4/lib/pfmlib_intel_x86.c
+++ b/src/libpfm4/lib/pfmlib_intel_x86.c
@@ -84,7 +84,7 @@ pfm_intel_x86_display_reg(void *this, pfmlib_event_desc_t *e)
 	if (pe[e->event].modmsk & _INTEL_X86_ATTR_T)
 		__pfm_vbprintf(" any=%d", reg.sel_anythr);
 
-	__pfm_vbprintf("]", e->fstr);
+	__pfm_vbprintf("]");
 
 	for (i = 1 ; i < e->count; i++)
 		__pfm_vbprintf(" [0x%"PRIx64"]", e->codes[i]);
diff --git a/src/libpfm4/lib/pfmlib_intel_x86_perf_event.c b/src/libpfm4/lib/pfmlib_intel_x86_perf_event.c
index 2fb62b7f5..9e923d2cc 100644
--- a/src/libpfm4/lib/pfmlib_intel_x86_perf_event.c
+++ b/src/libpfm4/lib/pfmlib_intel_x86_perf_event.c
@@ -97,7 +97,7 @@ pfm_intel_x86_get_perf_encoding(void *this, pfmlib_event_desc_t *e)
 		return ret;
 
 	if (e->count > 2) {
-		DPRINT("%s: unsupported count=%d\n", e->count);
+		DPRINT("unsupported count=%d\n", e->count);
 		return PFM_ERR_NOTSUPP;
 	}
 	/* default PMU type */