diff --git a/src/target/arm_dpm.c b/src/target/arm_dpm.c
index f15bff754..3e8180c36 100644
--- a/src/target/arm_dpm.c
+++ b/src/target/arm_dpm.c
@@ -973,7 +973,7 @@ int arm_dpm_setup(struct arm_dpm *dpm)
 	arm->read_core_reg = arm_dpm_read_core_reg;
 	arm->write_core_reg = arm_dpm_write_core_reg;
 
-	if (arm->core_cache != NULL) {
+	if (arm->core_cache == NULL) {
 		cache = arm_build_reg_cache(target, arm);
 		if (!cache)
 			return ERROR_FAIL;